diff --git a/.github/workflows/gradle-build.yml b/.github/workflows/gradle-build.yml
index 3e40fe7be..2117c7eee 100644
--- a/.github/workflows/gradle-build.yml
+++ b/.github/workflows/gradle-build.yml
@@ -18,10 +18,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'temurin'
           server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
           settings-path: ${{ github.workspace }} # location for the settings.xml file
diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index 6b56f288f..3d319e8c7 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -9,7 +9,7 @@ repositories {
     maven("https://repo.codemc.org/repository/maven-public") {
         name = "CodeMC"
     }
-    maven("https://papermc.io/repo/repository/maven-public/") {
+    maven("https://repo.papermc.io/repository/maven-public/") {
         name = "PaperMC"
     }
 }
@@ -17,7 +17,7 @@ repositories {
 dependencies {
     //TODO Allow pulling from Versions.kt
     implementation("com.github.johnrengelman", "shadow", "8.1.1")
-    implementation("io.papermc.paperweight.userdev", "io.papermc.paperweight.userdev.gradle.plugin", "1.7.0")
+    implementation("io.papermc.paperweight.userdev", "io.papermc.paperweight.userdev.gradle.plugin", "1.7.1")
 
     implementation("org.ow2.asm", "asm", "9.7")
     implementation("org.ow2.asm", "asm-tree", "9.7")
diff --git a/buildSrc/src/main/kotlin/CompilationConfig.kt b/buildSrc/src/main/kotlin/CompilationConfig.kt
index 952b91091..f0d1e7829 100644
--- a/buildSrc/src/main/kotlin/CompilationConfig.kt
+++ b/buildSrc/src/main/kotlin/CompilationConfig.kt
@@ -22,8 +22,8 @@ fun Project.configureCompilation() {
     apply<TectonicDocPlugin>()
     
     configure<JavaPluginExtension> {
-        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_17
+        sourceCompatibility = JavaVersion.VERSION_21
+        targetCompatibility = JavaVersion.VERSION_21
     }
     
     tasks.withType<JavaCompile> {
diff --git a/buildSrc/src/main/kotlin/DependencyConfig.kt b/buildSrc/src/main/kotlin/DependencyConfig.kt
index 58bde514c..0778808d8 100644
--- a/buildSrc/src/main/kotlin/DependencyConfig.kt
+++ b/buildSrc/src/main/kotlin/DependencyConfig.kt
@@ -36,7 +36,7 @@ fun Project.configureDependencies() {
         maven("https://repo.codemc.org/repository/maven-public") {
             name = "CodeMC"
         }
-        maven("https://papermc.io/repo/repository/maven-public/") {
+        maven("https://repo.papermc.io/repository/maven-public/") {
             name = "PaperMC"
         }
         maven("https://files.minecraftforge.net/maven/") {
diff --git a/buildSrc/src/main/kotlin/Versions.kt b/buildSrc/src/main/kotlin/Versions.kt
index ba9195cc7..f6e2606e0 100644
--- a/buildSrc/src/main/kotlin/Versions.kt
+++ b/buildSrc/src/main/kotlin/Versions.kt
@@ -8,7 +8,9 @@ object Versions {
         const val paralithic = "0.7.1"
         const val strata = "1.3.2"
         
-        const val cloud = "1.8.4"
+        const val cloud = "2.0.0-rc.2"
+        const val cloudPaper = "2.0.0-beta.9"
+        const val cloudFabric = "2.0.0-beta.7"
         
         const val caffeine = "3.1.8"
         
@@ -52,14 +54,14 @@ object Versions {
 //    }
     
     object Bukkit {
-        const val minecraft = "1.20.6"
-        const val paperBuild = "$minecraft-R0.1-20240501.172135-12"
+        const val minecraft = "1.21"
+        const val paperBuild = "$minecraft-R0.1-SNAPSHOT"
         const val paper = paperBuild
         const val paperLib = "1.0.8"
         const val reflectionRemapper = "0.1.1"
         const val paperDevBundle = paperBuild
         const val runPaper = "2.3.0"
-        const val paperWeight = "1.7.0"
+        const val paperWeight = "1.7.1"
     }
     
     //
diff --git a/common/addons/command-addons/src/main/java/com/dfsek/terra/addons/commands/addons/AddonsCommandAddon.java b/common/addons/command-addons/src/main/java/com/dfsek/terra/addons/commands/addons/AddonsCommandAddon.java
index 58a22ef7a..3277c0089 100644
--- a/common/addons/command-addons/src/main/java/com/dfsek/terra/addons/commands/addons/AddonsCommandAddon.java
+++ b/common/addons/command-addons/src/main/java/com/dfsek/terra/addons/commands/addons/AddonsCommandAddon.java
@@ -1,8 +1,5 @@
 package com.dfsek.terra.addons.commands.addons;
 
-import cloud.commandframework.ArgumentDescription;
-import cloud.commandframework.CommandManager;
-
 import com.dfsek.terra.addons.manifest.api.AddonInitializer;
 import com.dfsek.terra.api.Platform;
 import com.dfsek.terra.api.addon.BaseAddon;
@@ -12,6 +9,9 @@ import com.dfsek.terra.api.event.events.platform.CommandRegistrationEvent;
 import com.dfsek.terra.api.event.functional.FunctionalEventHandler;
 import com.dfsek.terra.api.inject.annotations.Inject;
 
+import org.incendo.cloud.CommandManager;
+import org.incendo.cloud.description.Description;
+
 
 public class AddonsCommandAddon implements AddonInitializer {
     @Inject
@@ -30,7 +30,7 @@ public class AddonsCommandAddon implements AddonInitializer {
                 CommandManager<CommandSender> manager = event.getCommandManager();
 
                 manager.command(
-                        manager.commandBuilder("addons", ArgumentDescription.of("List installed Terra addons"))
+                        manager.commandBuilder("addons", Description.of("List installed Terra addons"))
                             .permission("terra.addons")
                             .handler(context -> {
                                 StringBuilder addons = new StringBuilder("Installed addons:\n");
@@ -41,7 +41,7 @@ public class AddonsCommandAddon implements AddonInitializer {
                                         .append('@')
                                         .append(addon.getVersion().getFormatted())
                                         .append('\n'));
-                                context.getSender().sendMessage(addons.toString());
+                                context.sender().sendMessage(addons.toString());
                             })
                     )
                     .command(
@@ -61,7 +61,7 @@ public class AddonsCommandAddon implements AddonInitializer {
                                     .append('@')
                                     .append(versions.getFormatted())
                                     .append('\n'));
-                                context.getSender().sendMessage(addonInfo.toString());
+                                context.sender().sendMessage(addonInfo.toString());
                             })
                     );
             });
diff --git a/common/addons/command-packs/src/main/java/com/dfsek/terra/addons/commands/packs/PacksCommandAddon.java b/common/addons/command-packs/src/main/java/com/dfsek/terra/addons/commands/packs/PacksCommandAddon.java
index 1d99af328..6b840ef1f 100644
--- a/common/addons/command-packs/src/main/java/com/dfsek/terra/addons/commands/packs/PacksCommandAddon.java
+++ b/common/addons/command-packs/src/main/java/com/dfsek/terra/addons/commands/packs/PacksCommandAddon.java
@@ -1,7 +1,7 @@
 package com.dfsek.terra.addons.commands.packs;
 
-import cloud.commandframework.ArgumentDescription;
-import cloud.commandframework.CommandManager;
+import org.incendo.cloud.CommandManager;
+import org.incendo.cloud.description.Description;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -35,7 +35,7 @@ public class PacksCommandAddon implements AddonInitializer {
                 CommandManager<CommandSender> manager = event.getCommandManager();
 
                 manager.command(
-                        manager.commandBuilder("packs", ArgumentDescription.of("List installed config packs"))
+                        manager.commandBuilder("packs", Description.of("List installed config packs"))
                             .permission("terra.packs")
                             .handler(context -> {
                                 StringBuilder packs = new StringBuilder("Installed packs:\n");
@@ -43,12 +43,12 @@ public class PacksCommandAddon implements AddonInitializer {
                                     .append(pack.getID())
                                     .append('@')
                                     .append(pack.getVersion().getFormatted()));
-                                context.getSender().sendMessage(packs.toString());
+                                context.sender().sendMessage(packs.toString());
                             })
                     )
                     .command(
                         manager.commandBuilder("packs")
-                            .literal("info", ArgumentDescription.of("Get information about a pack"))
+                            .literal("info", Description.of("Get information about a pack"))
                             .permission("terra.packs.info")
                             .argument(RegistryArgument.of("pack", platform.getConfigRegistry()))
                             .handler(context -> {
@@ -65,21 +65,21 @@ public class PacksCommandAddon implements AddonInitializer {
                                     .append('@')
                                     .append(versions.getFormatted())
                                     .append('\n'));
-                                context.getSender().sendMessage(packInfo.toString());
+                                context.sender().sendMessage(packInfo.toString());
                             }))
                     .command(
                         manager.commandBuilder("packs")
-                            .literal("reload", ArgumentDescription.of("Reload config packs"))
+                            .literal("reload", Description.of("Reload config packs"))
                             .permission("terra.packs.reload")
                             .handler(context -> {
-                                context.getSender().sendMessage("Reloading Terra...");
+                                context.sender().sendMessage("Reloading Terra...");
                                 logger.info("Reloading Terra...");
                                 if(platform.reload()) {
                                     logger.info("Terra reloaded successfully.");
-                                    context.getSender().sendMessage("Terra reloaded successfully.");
+                                    context.sender().sendMessage("Terra reloaded successfully.");
                                 } else {
                                     logger.error("Terra failed to reload.");
-                                    context.getSender().sendMessage(
+                                    context.sender().sendMessage(
                                         "Terra failed to reload. See logs for more information.");
                                 }
                             }));
diff --git a/common/addons/command-profiler/src/main/java/com/dfsek/terra/addons/commands/profiler/ProfilerCommandAddon.java b/common/addons/command-profiler/src/main/java/com/dfsek/terra/addons/commands/profiler/ProfilerCommandAddon.java
index 2376c919b..a1559c8c5 100644
--- a/common/addons/command-profiler/src/main/java/com/dfsek/terra/addons/commands/profiler/ProfilerCommandAddon.java
+++ b/common/addons/command-profiler/src/main/java/com/dfsek/terra/addons/commands/profiler/ProfilerCommandAddon.java
@@ -1,7 +1,7 @@
 package com.dfsek.terra.addons.commands.profiler;
 
-import cloud.commandframework.ArgumentDescription;
-import cloud.commandframework.CommandManager;
+import org.incendo.cloud.CommandManager;
+import org.incendo.cloud.description.Description;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -33,24 +33,24 @@ public class ProfilerCommandAddon implements AddonInitializer {
                 CommandManager<CommandSender> manager = event.getCommandManager();
                 manager
                     .command(
-                        manager.commandBuilder("profiler", ArgumentDescription.of("Access the profiler"))
-                            .literal("start", ArgumentDescription.of("Start profiling"), "st")
+                        manager.commandBuilder("profiler", Description.of("Access the profiler"))
+                            .literal("start", Description.of("Start profiling"), "st")
                             .permission("terra.profiler.start")
                             .handler(context -> {
                                 platform.getProfiler().start();
-                                context.getSender().sendMessage("Profiling started.");
+                                context.sender().sendMessage("Profiling started.");
                             }))
                     .command(
-                        manager.commandBuilder("profiler", ArgumentDescription.of("Access the profiler"))
-                            .literal("stop", ArgumentDescription.of("Stop profiling"), "s")
+                        manager.commandBuilder("profiler", Description.of("Access the profiler"))
+                            .literal("stop", Description.of("Stop profiling"), "s")
                             .permission("terra.profiler.stop")
                             .handler(context -> {
                                 platform.getProfiler().stop();
-                                context.getSender().sendMessage("Profiling stopped.");
+                                context.sender().sendMessage("Profiling stopped.");
                             }))
                     .command(
-                        manager.commandBuilder("profiler", ArgumentDescription.of("Access the profiler"))
-                            .literal("query", ArgumentDescription.of("Query profiler results"), "q")
+                        manager.commandBuilder("profiler", Description.of("Access the profiler"))
+                            .literal("query", Description.of("Query profiler results"), "q")
                             .permission("terra.profiler.query")
                             .handler(context -> {
                                 StringBuilder data = new StringBuilder("Terra Profiler data: \n");
@@ -59,15 +59,15 @@ public class ProfilerCommandAddon implements AddonInitializer {
                                     .append(timings.toString())
                                     .append('\n'));
                                 logger.info(data.toString());
-                                context.getSender().sendMessage("Profiling data dumped to console.");
+                                context.sender().sendMessage("Profiling data dumped to console.");
                             }))
                     .command(
-                        manager.commandBuilder("profiler", ArgumentDescription.of("Access the profiler"))
-                            .literal("reset", ArgumentDescription.of("Reset the profiler"), "r")
+                        manager.commandBuilder("profiler", Description.of("Access the profiler"))
+                            .literal("reset", Description.of("Reset the profiler"), "r")
                             .permission("terra.profiler.reset")
                             .handler(context -> {
                                 platform.getProfiler().reset();
-                                context.getSender().sendMessage("Profiler reset.");
+                                context.sender().sendMessage("Profiler reset.");
                             }));
             });
     }
diff --git a/common/addons/command-structures/src/main/java/com/dfsek/terra/addons/commands/structure/StructureCommandAddon.java b/common/addons/command-structures/src/main/java/com/dfsek/terra/addons/commands/structure/StructureCommandAddon.java
index 438546137..67e910661 100644
--- a/common/addons/command-structures/src/main/java/com/dfsek/terra/addons/commands/structure/StructureCommandAddon.java
+++ b/common/addons/command-structures/src/main/java/com/dfsek/terra/addons/commands/structure/StructureCommandAddon.java
@@ -1,11 +1,5 @@
 package com.dfsek.terra.addons.commands.structure;
 
-import cloud.commandframework.ArgumentDescription;
-import cloud.commandframework.CommandManager;
-import cloud.commandframework.arguments.standard.EnumArgument;
-import cloud.commandframework.arguments.standard.LongArgument;
-import cloud.commandframework.context.CommandContext;
-
 import java.util.Random;
 
 import com.dfsek.terra.addons.manifest.api.AddonInitializer;
@@ -22,6 +16,13 @@ import com.dfsek.terra.api.structure.Structure;
 import com.dfsek.terra.api.util.Rotation;
 import com.dfsek.terra.api.util.reflection.TypeKey;
 
+import org.incendo.cloud.CommandManager;
+import org.incendo.cloud.component.DefaultValue;
+import org.incendo.cloud.context.CommandContext;
+import org.incendo.cloud.description.Description;
+import org.incendo.cloud.parser.standard.EnumParser;
+import org.incendo.cloud.parser.standard.LongParser;
+
 
 public class StructureCommandAddon implements AddonInitializer {
     @Inject
@@ -31,7 +32,7 @@ public class StructureCommandAddon implements AddonInitializer {
     private BaseAddon addon;
 
     private static Registry<Structure> getStructureRegistry(CommandContext<CommandSender> sender) {
-        return sender.getSender().getEntity().orElseThrow().world().getPack().getRegistry(Structure.class);
+        return sender.sender().getEntity().orElseThrow().world().getPack().getRegistry(Structure.class);
     }
 
     @Override
@@ -43,16 +44,16 @@ public class StructureCommandAddon implements AddonInitializer {
                 CommandManager<CommandSender> manager = event.getCommandManager();
 
                 manager.command(
-                    manager.commandBuilder("structures", ArgumentDescription.of("Manage or generate structures"))
+                    manager.commandBuilder("structures", Description.of("Manage or generate structures"))
                         .literal("generate")
-                        .argument(RegistryArgument.builder("structure",
+                        .optional(RegistryArgument.builder("structure",
                             StructureCommandAddon::getStructureRegistry,
                             TypeKey.of(Structure.class)))
-                        .argument(LongArgument.optional("seed", 0))
-                        .argument(EnumArgument.optional(Rotation.class, "rotation", Rotation.NONE))
+                        .optional("seed", LongParser.longParser(), DefaultValue.constant(0L))
+                        .optional("rotation", EnumParser.enumParser(Rotation.class), DefaultValue.constant(Rotation.NONE))
                         .handler(context -> {
                             Structure structure = context.get("structure");
-                            Entity sender = context.getSender().getEntity().orElseThrow();
+                            Entity sender = context.sender().getEntity().orElseThrow();
                             structure.generate(
                                 sender.position().toInt(),
                                 sender.world(),
diff --git a/common/api/build.gradle.kts b/common/api/build.gradle.kts
index 4f88c83e3..898f8bdcd 100644
--- a/common/api/build.gradle.kts
+++ b/common/api/build.gradle.kts
@@ -2,7 +2,7 @@ dependencies {
     api("ca.solo-studios", "strata", Versions.Libraries.strata)
     compileOnlyApi("org.slf4j", "slf4j-api", Versions.Libraries.slf4j)
     testImplementation("org.slf4j", "slf4j-api", Versions.Libraries.slf4j)
-    api("cloud.commandframework", "cloud-core", Versions.Libraries.cloud)
+    api("org.incendo", "cloud-core", Versions.Libraries.cloud)
 
     api("com.dfsek.tectonic", "common", Versions.Libraries.tectonic)
 
diff --git a/common/api/src/main/java/com/dfsek/terra/api/command/arguments/RegistryArgument.java b/common/api/src/main/java/com/dfsek/terra/api/command/arguments/RegistryArgument.java
index e89298751..91d6b56b9 100644
--- a/common/api/src/main/java/com/dfsek/terra/api/command/arguments/RegistryArgument.java
+++ b/common/api/src/main/java/com/dfsek/terra/api/command/arguments/RegistryArgument.java
@@ -1,18 +1,10 @@
 package com.dfsek.terra.api.command.arguments;
 
-import cloud.commandframework.ArgumentDescription;
-import cloud.commandframework.arguments.CommandArgument;
-import cloud.commandframework.arguments.parser.ArgumentParseResult;
-import cloud.commandframework.arguments.parser.ArgumentParser;
-import cloud.commandframework.context.CommandContext;
 import io.leangen.geantyref.TypeToken;
 import org.checkerframework.checker.nullness.qual.NonNull;
-import org.checkerframework.checker.nullness.qual.Nullable;
 
-import java.util.List;
 import java.util.Optional;
-import java.util.Queue;
-import java.util.function.BiFunction;
+import java.util.concurrent.CompletableFuture;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -21,40 +13,33 @@ import com.dfsek.terra.api.registry.exception.NoSuchEntryException;
 import com.dfsek.terra.api.registry.key.RegistryKey;
 import com.dfsek.terra.api.util.reflection.TypeKey;
 
+import org.incendo.cloud.component.CommandComponent;
+import org.incendo.cloud.component.DefaultValue;
+import org.incendo.cloud.context.CommandContext;
+import org.incendo.cloud.context.CommandInput;
+import org.incendo.cloud.parser.ArgumentParseResult;
+import org.incendo.cloud.parser.ArgumentParser;
+import org.incendo.cloud.parser.ParserDescriptor;
+import org.incendo.cloud.suggestion.Suggestion;
+import org.incendo.cloud.suggestion.SuggestionProvider;
 
-public class RegistryArgument<T, R> extends CommandArgument<T, R> {
-    private RegistryArgument(
-        boolean required,
-        @NonNull String name,
-        Function<CommandContext<T>, Registry<R>> registryFunction,
-        TypeToken<R> typeToken,
-        @NonNull String defaultValue,
-        @Nullable BiFunction<CommandContext<T>, String, List<String>> suggestionsProvider,
-        @NonNull ArgumentDescription description
-    ) {
-        super(required,
-            name,
-            new RegistryArgumentParser<>(registryFunction),
-            defaultValue,
-            typeToken,
-            suggestionsProvider,
-            description);
-    }
+
+public class RegistryArgument {
 
     public static <T, R> Builder<T, R> builder(String name, Registry<R> registry) {
         return new Builder<>(name, registry);
     }
 
-    public static <T, R> CommandArgument<T, R> of(String name, Registry<R> registry) {
+    public static <T, R> CommandComponent<T> of(String name, Registry<R> registry) {
         return RegistryArgument.<T, R>builder(name, registry).build();
     }
 
-    public static <T, R> CommandArgument<T, R> optional(String name, Registry<R> registry) {
-        return RegistryArgument.<T, R>builder(name, registry).asOptional().build();
+    public static <T, R> CommandComponent<T> optional(String name, Registry<R> registry) {
+        return RegistryArgument.<T, R>builder(name, registry).optional().build();
     }
 
-    public static <T, R> CommandArgument<T, R> optional(String name, Registry<R> registry, String defaultKey) {
-        return RegistryArgument.<T, R>builder(name, registry).asOptionalWithDefault(defaultKey).build();
+    public static <T, R> CommandComponent<T> optional(String name, Registry<R> registry, DefaultValue<T, R> defaultKey) {
+        return RegistryArgument.<T, R>builder(name, registry).optional(defaultKey).build();
     }
 
     @SuppressWarnings("unchecked")
@@ -63,49 +48,36 @@ public class RegistryArgument<T, R> extends CommandArgument<T, R> {
         return new Builder<>(name, registryFunction, (TypeToken<R>) TypeToken.get(registryType.getType()));
     }
 
-    public static <T, R> CommandArgument<T, R> of(String name, Function<CommandContext<T>, Registry<R>> registryFunction,
+    public static <T, R> CommandComponent<T> of(String name, Function<CommandContext<T>, Registry<R>> registryFunction,
                                                   TypeKey<R> registryType) {
         return RegistryArgument.<T, R>builder(name, registryFunction, registryType).build();
     }
 
-    public static <T, R> CommandArgument<T, R> optional(String name, Function<CommandContext<T>, Registry<R>> registryFunction,
+    public static <T, R> CommandComponent<T> optional(String name, Function<CommandContext<T>, Registry<R>> registryFunction,
                                                         TypeKey<R> registryType) {
-        return RegistryArgument.builder(name, registryFunction, registryType).asOptional().build();
+        return RegistryArgument.builder(name, registryFunction, registryType).optional().build();
     }
 
-    public static <T, R> CommandArgument<T, R> optional(String name, Function<CommandContext<T>, Registry<R>> registryFunction,
-                                                        TypeKey<R> registryType, String defaultKey) {
-        return RegistryArgument.builder(name, registryFunction, registryType).asOptionalWithDefault(defaultKey).build();
+    public static <T, R> CommandComponent<T> optional(String name, Function<CommandContext<T>, Registry<R>> registryFunction,
+                                                        TypeKey<R> registryType, DefaultValue<T, R> defaultKey) {
+        return RegistryArgument.builder(name, registryFunction, registryType).optional(defaultKey).build();
     }
 
-    public static final class Builder<T, R> extends CommandArgument.Builder<T, R> {
-        private final Function<CommandContext<T>, Registry<R>> registryFunction;
-        private final TypeToken<R> typeToken;
+    public static final class Builder<T, R> extends CommandComponent.Builder<T, R> {
 
         @SuppressWarnings("unchecked")
         private Builder(@NonNull String name, Registry<R> registry) {
-            super((TypeToken<R>) TypeToken.get(registry.getType().getType()), name);
-            this.registryFunction = commandContext -> registry;
-            this.typeToken = (TypeToken<R>) TypeToken.get(registry.getType().getType());
+            super();
+            this.name(name);
+            this.parser(ParserDescriptor.of(
+                new RegistryArgumentParser<>(commandContext -> registry),
+                (TypeToken<R>) TypeToken.get(registry.getType().getType())));
         }
 
         private Builder(@NonNull String name, Function<CommandContext<T>, Registry<R>> registryFunction, TypeToken<R> typeToken) {
-            super(typeToken, name);
-            this.typeToken = typeToken;
-            this.registryFunction = registryFunction;
-        }
-
-        @Override
-        public @NonNull RegistryArgument<T, R> build() {
-            return new RegistryArgument<>(
-                isRequired(),
-                getName(),
-                registryFunction,
-                typeToken,
-                getDefaultValue(),
-                getSuggestionsProvider(),
-                getDefaultDescription()
-            );
+            super();
+            this.name(name);
+            this.parser(ParserDescriptor.of(new RegistryArgumentParser<>(registryFunction), typeToken));
         }
     }
 
@@ -119,12 +91,12 @@ public class RegistryArgument<T, R> extends CommandArgument<T, R> {
 
         @Override
         public @NonNull ArgumentParseResult<@NonNull R> parse(@NonNull CommandContext<@NonNull T> commandContext,
-                                                              @NonNull Queue<@NonNull String> inputQueue) {
-            String input = inputQueue.remove();
-            String next = inputQueue.peek();
-            if(next != null && next.equals(":")) {
-                input += inputQueue.remove();
-                input += inputQueue.remove();
+                                                              @NonNull CommandInput commandInput) {
+            String input = commandInput.readString();
+            String next = commandInput.peekString();
+            if(next.equals(":")) {
+                input += commandInput.readString();
+                input += commandInput.readString();
             }
 
             Registry<R> registry = registryFunction.apply(commandContext);
@@ -146,8 +118,17 @@ public class RegistryArgument<T, R> extends CommandArgument<T, R> {
         }
 
         @Override
-        public @NonNull List<@NonNull String> suggestions(@NonNull CommandContext<T> commandContext, @NonNull String input) {
-            return registryFunction.apply(commandContext).keys().stream().map(RegistryKey::toString).sorted().collect(Collectors.toList());
+        public @NonNull SuggestionProvider<T> suggestionProvider() {
+            return new SuggestionProvider<>() {
+                @Override
+                public @NonNull CompletableFuture<? extends @NonNull Iterable<? extends @NonNull Suggestion>> suggestionsFuture(
+                    @NonNull CommandContext<T> context, @NonNull CommandInput input) {
+
+                    // TODO: Verify whether this is correct
+                    return CompletableFuture.completedFuture(registryFunction.apply(context).keys().stream().map(
+                        registryKey -> Suggestion.suggestion(registryKey.toString())).sorted().collect(Collectors.toList()));
+                }
+            };
         }
     }
 }
diff --git a/common/api/src/main/java/com/dfsek/terra/api/event/events/platform/CommandRegistrationEvent.java b/common/api/src/main/java/com/dfsek/terra/api/event/events/platform/CommandRegistrationEvent.java
index de13f061a..3ad041c9b 100644
--- a/common/api/src/main/java/com/dfsek/terra/api/event/events/platform/CommandRegistrationEvent.java
+++ b/common/api/src/main/java/com/dfsek/terra/api/event/events/platform/CommandRegistrationEvent.java
@@ -1,10 +1,10 @@
 package com.dfsek.terra.api.event.events.platform;
 
-import cloud.commandframework.CommandManager;
-
 import com.dfsek.terra.api.command.CommandSender;
 import com.dfsek.terra.api.event.events.Event;
 
+import org.incendo.cloud.CommandManager;
+
 
 public class CommandRegistrationEvent implements Event {
     private final CommandManager<CommandSender> commandManager;
diff --git a/common/api/src/main/java/com/dfsek/terra/api/util/reflection/ReflectionUtil.java b/common/api/src/main/java/com/dfsek/terra/api/util/reflection/ReflectionUtil.java
index 8e35c3f9f..6b0c8fd28 100644
--- a/common/api/src/main/java/com/dfsek/terra/api/util/reflection/ReflectionUtil.java
+++ b/common/api/src/main/java/com/dfsek/terra/api/util/reflection/ReflectionUtil.java
@@ -8,6 +8,7 @@
 package com.dfsek.terra.api.util.reflection;
 
 import org.jetbrains.annotations.NotNull;
+import sun.misc.Unsafe;
 
 import java.lang.annotation.Annotation;
 import java.lang.reflect.AnnotatedElement;
@@ -26,6 +27,18 @@ import java.util.stream.Stream;
 
 
 public final class ReflectionUtil {
+    private static final Unsafe UNSAFE;
+
+    static {
+        try{
+            final Field unsafeField = Unsafe.class.getDeclaredField("theUnsafe");
+            unsafeField.setAccessible(true);
+            UNSAFE = (Unsafe) unsafeField.get(null);
+        } catch(NoSuchFieldException | IllegalAccessException e){
+            throw new RuntimeException(e);
+        }
+    }
+
     public static Field[] getFields(@NotNull Class<?> type) {
         Field[] result = type.getDeclaredFields();
         Class<?> parentClass = type.getSuperclass();
@@ -35,6 +48,14 @@ public final class ReflectionUtil {
         return result;
     }
 
+    public static void setFinalField(Object obj, String fieldName, Object value) throws NoSuchFieldException {
+        Field field = obj.getClass().getDeclaredField(fieldName);
+        field.setAccessible(true);
+        long fieldOffset = UNSAFE.objectFieldOffset(field);
+
+        UNSAFE.putObject(obj, fieldOffset, value);
+    }
+
     public static Method[] getMethods(@NotNull Class<?> type) {
         Method[] result = type.getDeclaredMethods();
         Class<?> parentClass = type.getSuperclass();
diff --git a/platforms/bukkit/build.gradle.kts b/platforms/bukkit/build.gradle.kts
index 6f75b0133..95924dadd 100644
--- a/platforms/bukkit/build.gradle.kts
+++ b/platforms/bukkit/build.gradle.kts
@@ -10,7 +10,7 @@ repositories {
 
 dependencies {
     shaded(project(":platforms:bukkit:common"))
-    shaded(project(":platforms:bukkit:nms:v1_20_R3", configuration = "reobf"))
+    shaded(project(":platforms:bukkit:nms:v1_21", configuration = "reobf"))
     shaded("xyz.jpenilla", "reflection-remapper", Versions.Bukkit.reflectionRemapper)
 }
 
diff --git a/platforms/bukkit/common/build.gradle.kts b/platforms/bukkit/common/build.gradle.kts
index f47415da4..eaf1956cb 100644
--- a/platforms/bukkit/common/build.gradle.kts
+++ b/platforms/bukkit/common/build.gradle.kts
@@ -11,5 +11,5 @@ dependencies {
 
     shadedApi("com.google.guava", "guava", Versions.Libraries.Internal.guava)
 
-    shadedApi("cloud.commandframework", "cloud-paper", Versions.Libraries.cloud)
+    shadedApi("org.incendo", "cloud-paper", Versions.Libraries.cloudPaper)
 }
diff --git a/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/TerraBukkitPlugin.java b/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/TerraBukkitPlugin.java
index 555d073c7..8c392dba1 100644
--- a/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/TerraBukkitPlugin.java
+++ b/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/TerraBukkitPlugin.java
@@ -17,15 +17,16 @@
 
 package com.dfsek.terra.bukkit;
 
-import cloud.commandframework.brigadier.CloudBrigadierManager;
-import cloud.commandframework.bukkit.CloudBukkitCapabilities;
-import cloud.commandframework.execution.CommandExecutionCoordinator;
-import cloud.commandframework.paper.PaperCommandManager;
 import io.papermc.paper.threadedregions.scheduler.AsyncScheduler;
 import io.papermc.paper.threadedregions.scheduler.GlobalRegionScheduler;
 import org.bukkit.Bukkit;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.plugin.java.JavaPlugin;
+import org.incendo.cloud.SenderMapper;
+import org.incendo.cloud.brigadier.CloudBrigadierManager;
+import org.incendo.cloud.bukkit.CloudBukkitCapabilities;
+import org.incendo.cloud.execution.ExecutionCoordinator;
+import org.incendo.cloud.paper.LegacyPaperCommandManager;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.slf4j.Logger;
@@ -71,7 +72,7 @@ public class TerraBukkitPlugin extends JavaPlugin {
         }
 
         try {
-            PaperCommandManager<CommandSender> commandManager = getCommandSenderPaperCommandManager();
+            LegacyPaperCommandManager<CommandSender> commandManager = getCommandSenderPaperCommandManager();
 
             platform.getEventManager().callEvent(new CommandRegistrationEvent(commandManager));
 
@@ -91,22 +92,26 @@ public class TerraBukkitPlugin extends JavaPlugin {
     }
 
     @NotNull
-    private PaperCommandManager<CommandSender> getCommandSenderPaperCommandManager() throws Exception {
-        PaperCommandManager<CommandSender> commandManager = new PaperCommandManager<>(this,
-            CommandExecutionCoordinator.simpleCoordinator(),
-            BukkitAdapter::adapt,
-            BukkitAdapter::adapt);
-        if(commandManager.hasCapability(CloudBukkitCapabilities.NATIVE_BRIGADIER)) {
+    private LegacyPaperCommandManager<CommandSender> getCommandSenderPaperCommandManager() throws Exception {
+        // TODO: Update to PaperCommandManager
+        LegacyPaperCommandManager<CommandSender> commandManager = new LegacyPaperCommandManager<>(
+            this,
+            ExecutionCoordinator.simpleCoordinator(),
+            SenderMapper.create(
+                BukkitAdapter::adapt,
+                BukkitAdapter::adapt
+            ));
+
+        if (commandManager.hasCapability(CloudBukkitCapabilities.NATIVE_BRIGADIER)) {
             commandManager.registerBrigadier();
             final CloudBrigadierManager<?, ?> brigManager = commandManager.brigadierManager();
             if(brigManager != null) {
                 brigManager.setNativeNumberSuggestions(false);
             }
-        }
-
-        if(commandManager.hasCapability(CloudBukkitCapabilities.ASYNCHRONOUS_COMPLETION)) {
+        } else if (commandManager.hasCapability(CloudBukkitCapabilities.ASYNCHRONOUS_COMPLETION)) {
             commandManager.registerAsynchronousCompletions();
         }
+
         return commandManager;
     }
 
diff --git a/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/handles/BukkitWorldHandle.java b/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/handles/BukkitWorldHandle.java
index e3b92b069..c6113bbd7 100644
--- a/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/handles/BukkitWorldHandle.java
+++ b/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/handles/BukkitWorldHandle.java
@@ -72,7 +72,7 @@ public class BukkitWorldHandle implements WorldHandle {
         String entityID = id.toUpperCase(Locale.ROOT).substring(10);
 
         return new BukkitEntityType(switch(entityID) {
-            case "END_CRYSTAL" -> org.bukkit.entity.EntityType.ENDER_CRYSTAL;
+            case "END_CRYSTAL" -> org.bukkit.entity.EntityType.END_CRYSTAL;
             case "ENDER_CRYSTAL" -> throw new IllegalArgumentException(
                 "Invalid entity identifier " + id); // make sure this issue can't happen the other way around.
             default -> org.bukkit.entity.EntityType.valueOf(entityID);
diff --git a/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/nms/Initializer.java b/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/nms/Initializer.java
index 413250d57..3f7375bc4 100644
--- a/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/nms/Initializer.java
+++ b/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/nms/Initializer.java
@@ -1,6 +1,7 @@
 package com.dfsek.terra.bukkit.nms;
 
-import org.bukkit.Bukkit;
+import com.dfsek.terra.bukkit.util.VersionUtil;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -8,13 +9,18 @@ import com.dfsek.terra.bukkit.PlatformImpl;
 
 
 public interface Initializer {
-    String NMS = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
+    String NMS = VersionUtil.getMinecraftVersionInfo().toString().replace(".", "_");
     String TERRA_PACKAGE = Initializer.class.getPackageName();
 
     static boolean init(PlatformImpl platform) {
         Logger logger = LoggerFactory.getLogger(Initializer.class);
         try {
-            Class<?> initializerClass = Class.forName(TERRA_PACKAGE + "." + NMS + ".NMSInitializer");
+            String packageVersion = NMS;
+            if (NMS.equals("v1_21_1")) {
+                packageVersion = "v1_21";
+            }
+
+            Class<?> initializerClass = Class.forName(TERRA_PACKAGE + "." + packageVersion + ".NMSInitializer");
             try {
                 Initializer initializer = (Initializer) initializerClass.getConstructor().newInstance();
                 initializer.initialize(platform);
diff --git a/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/util/VersionUtil.java b/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/util/VersionUtil.java
index 6bc06a437..6a8c662e0 100644
--- a/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/util/VersionUtil.java
+++ b/platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/util/VersionUtil.java
@@ -77,13 +77,13 @@ public final class VersionUtil {
     public static final class MinecraftVersionInfo {
         private static final Logger logger = LoggerFactory.getLogger(MinecraftVersionInfo.class);
 
-        private static final Pattern VERSION_PATTERN = Pattern.compile("v?(\\d+)_(\\d+)_R(\\d+)");
+        private static final Pattern VERSION_PATTERN = Pattern.compile("(\\d+)\\.(\\d+)(?:\\.(\\d+))?");
         private final int major;
         private final int minor;
         private final int patch;
 
         private MinecraftVersionInfo() {
-            this(Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3]);
+            this(Bukkit.getServer().getBukkitVersion().split("-")[0]);
         }
 
         private MinecraftVersionInfo(int major, int minor, int patch) {
@@ -97,7 +97,7 @@ public final class VersionUtil {
             if(versionMatcher.find()) {
                 major = Integer.parseInt(versionMatcher.group(1));
                 minor = Integer.parseInt(versionMatcher.group(2));
-                patch = Integer.parseInt(versionMatcher.group(3));
+                patch = versionMatcher.group(3) != null ? Integer.parseInt(versionMatcher.group(3)) : -1;
             } else {
                 logger.warn("Error while parsing minecraft version info. Continuing launch, but setting all versions to -1.");
 
@@ -112,7 +112,11 @@ public final class VersionUtil {
             if(major == -1 && minor == -1 && patch == -1)
                 return "Unknown";
 
-            return String.format("v%d.%d.%d", major, minor, patch);
+            if (patch >= 0) {
+                return String.format("v%d.%d.%d", major, minor, patch);
+            } else {
+                return String.format("v%d.%d", major, minor);
+            }
         }
 
         public int getMajor() {
diff --git a/platforms/bukkit/nms/v1_20_R3/build.gradle.kts b/platforms/bukkit/nms/v1_21/build.gradle.kts
similarity index 100%
rename from platforms/bukkit/nms/v1_20_R3/build.gradle.kts
rename to platforms/bukkit/nms/v1_21/build.gradle.kts
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/AwfulBukkitHacks.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/AwfulBukkitHacks.java
similarity index 91%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/AwfulBukkitHacks.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/AwfulBukkitHacks.java
index fa2cc9907..d16bbbf30 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/AwfulBukkitHacks.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/AwfulBukkitHacks.java
@@ -1,10 +1,10 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
 import com.google.common.collect.ImmutableMap;
-import com.mojang.serialization.Lifecycle;
 import net.minecraft.core.Holder;
 import net.minecraft.core.Holder.Reference;
 import net.minecraft.core.MappedRegistry;
+import net.minecraft.core.RegistrationInfo;
 import net.minecraft.core.WritableRegistry;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.resources.ResourceKey;
@@ -41,15 +41,15 @@ public class AwfulBukkitHacks {
                 try {
                     BukkitPlatformBiome platformBiome = (BukkitPlatformBiome) biome.getPlatformBiome();
                     NamespacedKey vanillaBukkitKey = platformBiome.getHandle().getKey();
-                    ResourceLocation vanillaMinecraftKey = new ResourceLocation(vanillaBukkitKey.getNamespace(), vanillaBukkitKey.getKey());
+                    ResourceLocation vanillaMinecraftKey = ResourceLocation.fromNamespaceAndPath(vanillaBukkitKey.getNamespace(), vanillaBukkitKey.getKey());
                     Biome platform = NMSBiomeInjector.createBiome(biome, Objects.requireNonNull(biomeRegistry.get(vanillaMinecraftKey)));
 
                     ResourceKey<Biome> delegateKey = ResourceKey.create(
                         Registries.BIOME,
-                        new ResourceLocation("terra", NMSBiomeInjector.createBiomeID(pack, key))
+                        ResourceLocation.fromNamespaceAndPath("terra", NMSBiomeInjector.createBiomeID(pack, key))
                     );
 
-                    Reference<Biome> holder = biomeRegistry.register(delegateKey, platform, Lifecycle.stable());
+                    Reference<Biome> holder = biomeRegistry.register(delegateKey, platform, RegistrationInfo.BUILT_IN);
                     Reflection.REFERENCE.invokeBindValue(holder, platform); // IMPORTANT: bind holder.
 
                     platformBiome.getContext().put(new NMSBiomeInfo(delegateKey));
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSBiomeInfo.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSBiomeInfo.java
similarity index 83%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSBiomeInfo.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSBiomeInfo.java
index f47d21c56..5bf85aa6d 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSBiomeInfo.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSBiomeInfo.java
@@ -1,4 +1,4 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.world.level.biome.Biome;
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSBiomeInjector.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSBiomeInjector.java
similarity index 98%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSBiomeInjector.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSBiomeInjector.java
index e75b6fc0a..e6d1f7869 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSBiomeInjector.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSBiomeInjector.java
@@ -1,4 +1,4 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
 import net.minecraft.core.Holder;
 import net.minecraft.core.Registry;
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSBiomeProvider.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSBiomeProvider.java
similarity index 75%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSBiomeProvider.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSBiomeProvider.java
index 875a77fb5..18184144f 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSBiomeProvider.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSBiomeProvider.java
@@ -1,6 +1,6 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
-import com.mojang.serialization.Codec;
+import com.mojang.serialization.MapCodec;
 import net.minecraft.core.Holder;
 import net.minecraft.core.Registry;
 import net.minecraft.world.level.biome.Biome;
@@ -35,8 +35,12 @@ public class NMSBiomeProvider extends BiomeSource {
     }
 
     @Override
-    protected @NotNull Codec<? extends BiomeSource> codec() {
-        return BiomeSource.CODEC;
+    protected @NotNull MapCodec<? extends BiomeSource> codec() {
+        return MapCodec.assumeMapUnsafe(BiomeSource.CODEC);
+//        return MapCodec.unit(null);
+//        BuiltInRegistries.BIOME_SOURCE.byNameCodec().dispatchMap(this::codec, Function.identity());
+//        BuiltInRegistries.BIOME_SOURCE.byNameCodec().dispatchStable(BiomeSource::codec, Function.identity());
+//        return BiomeSource.CODEC;
     }
 
     @Override
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSChunkGeneratorDelegate.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSChunkGeneratorDelegate.java
similarity index 90%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSChunkGeneratorDelegate.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSChunkGeneratorDelegate.java
index 4338dc140..16097df27 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSChunkGeneratorDelegate.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSChunkGeneratorDelegate.java
@@ -1,6 +1,6 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
-import com.mojang.serialization.Codec;
+import com.mojang.serialization.MapCodec;
 import net.minecraft.core.BlockPos;
 import net.minecraft.server.level.WorldGenRegion;
 import net.minecraft.world.level.LevelAccessor;
@@ -19,14 +19,13 @@ import net.minecraft.world.level.levelgen.GenerationStep.Carving;
 import net.minecraft.world.level.levelgen.Heightmap.Types;
 import net.minecraft.world.level.levelgen.RandomState;
 import net.minecraft.world.level.levelgen.blending.Blender;
-import org.bukkit.craftbukkit.v1_20_R3.block.data.CraftBlockData;
+import org.bukkit.craftbukkit.block.data.CraftBlockData;
 import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.util.List;
 import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.Executor;
 
 import com.dfsek.terra.api.config.ConfigPack;
 import com.dfsek.terra.api.world.biome.generation.BiomeProvider;
@@ -54,8 +53,8 @@ public class NMSChunkGeneratorDelegate extends ChunkGenerator {
     }
 
     @Override
-    protected @NotNull Codec<? extends ChunkGenerator> codec() {
-        return ChunkGenerator.CODEC;
+    protected @NotNull MapCodec<? extends ChunkGenerator> codec() {
+        return MapCodec.assumeMapUnsafe(ChunkGenerator.CODEC);
     }
 
     @Override
@@ -87,10 +86,10 @@ public class NMSChunkGeneratorDelegate extends ChunkGenerator {
     }
 
     @Override
-    public @NotNull CompletableFuture<ChunkAccess> fillFromNoise(@NotNull Executor executor, @NotNull Blender blender,
-                                                                 @NotNull RandomState noiseConfig,
-                                                                 @NotNull StructureManager structureAccessor, @NotNull ChunkAccess chunk) {
-        return vanilla.fillFromNoise(executor, blender, noiseConfig, structureAccessor, chunk)
+    public CompletableFuture<ChunkAccess> fillFromNoise(@NotNull Blender blender,
+                                                        @NotNull RandomState noiseConfig,
+                                                        @NotNull StructureManager structureAccessor, @NotNull ChunkAccess chunk) {
+        return vanilla.fillFromNoise(blender, noiseConfig, structureAccessor, chunk)
             .thenApply(c -> {
                 LevelAccessor level = Reflection.STRUCTURE_MANAGER.getLevel(structureAccessor);
                 BiomeProvider biomeProvider = pack.getBiomeProvider();
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSInitializer.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSInitializer.java
similarity index 90%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSInitializer.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSInitializer.java
index 084c5c30a..18f1a058f 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSInitializer.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSInitializer.java
@@ -1,4 +1,4 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
 import org.bukkit.Bukkit;
 
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSInjectListener.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSInjectListener.java
similarity index 63%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSInjectListener.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSInjectListener.java
index a81e93a3f..b471faa88 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSInjectListener.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSInjectListener.java
@@ -1,9 +1,14 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
+import com.dfsek.terra.api.util.reflection.ReflectionUtil;
+
+import net.minecraft.server.level.ChunkMap;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.level.chunk.ChunkGenerator;
+import net.minecraft.world.level.chunk.status.WorldGenContext;
+import org.bukkit.Bukkit;
 import org.bukkit.World;
-import org.bukkit.craftbukkit.v1_20_R3.CraftWorld;
+import org.bukkit.craftbukkit.CraftWorld;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.world.WorldInitEvent;
@@ -37,8 +42,20 @@ public class NMSInjectListener implements Listener {
 
             ChunkGenerator vanilla = serverWorld.getChunkSource().getGenerator();
             NMSBiomeProvider provider = new NMSBiomeProvider(pack.getBiomeProvider(), craftWorld.getSeed());
+            ChunkMap chunkMap = serverWorld.getChunkSource().chunkMap;
+            WorldGenContext worldGenContext = chunkMap.worldGenContext;
 
-            serverWorld.getChunkSource().chunkMap.generator = new NMSChunkGeneratorDelegate(vanilla, pack, provider, craftWorld.getSeed());
+            try {
+                ReflectionUtil.setFinalField(chunkMap, "worldGenContext", new WorldGenContext(
+                    worldGenContext.level(),
+                    new NMSChunkGeneratorDelegate(vanilla, pack, provider, craftWorld.getSeed()),
+                    worldGenContext.structureManager(),
+                    worldGenContext.lightEngine(),
+                    worldGenContext.mainThreadMailBox()
+                ));
+            } catch(NoSuchFieldException e) {
+                throw new RuntimeException(e);
+            }
 
             LOGGER.info("Successfully injected into world.");
 
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSWorldProperties.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSWorldProperties.java
similarity index 94%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSWorldProperties.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSWorldProperties.java
index 60f6cee46..7860cf530 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/NMSWorldProperties.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/NMSWorldProperties.java
@@ -1,4 +1,4 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
 import net.minecraft.world.level.LevelHeightAccessor;
 
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/Reflection.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/Reflection.java
similarity index 97%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/Reflection.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/Reflection.java
index 32243da54..57e1b8c9c 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/Reflection.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/Reflection.java
@@ -1,4 +1,4 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
 import net.minecraft.core.Holder;
 import net.minecraft.core.Holder.Reference;
diff --git a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/RegistryFetcher.java b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/RegistryFetcher.java
similarity index 88%
rename from platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/RegistryFetcher.java
rename to platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/RegistryFetcher.java
index 6dbbecbc7..0377eea0f 100644
--- a/platforms/bukkit/nms/v1_20_R3/src/main/java/com/dfsek/terra/bukkit/nms/v1_20_R3/RegistryFetcher.java
+++ b/platforms/bukkit/nms/v1_21/src/main/java/com/dfsek/terra/bukkit/nms/v1_21/RegistryFetcher.java
@@ -1,4 +1,4 @@
-package com.dfsek.terra.bukkit.nms.v1_20_R3;
+package com.dfsek.terra.bukkit.nms.v1_21;
 
 import net.minecraft.core.Registry;
 import net.minecraft.core.registries.Registries;
@@ -6,7 +6,7 @@ import net.minecraft.resources.ResourceKey;
 import net.minecraft.server.dedicated.DedicatedServer;
 import net.minecraft.world.level.biome.Biome;
 import org.bukkit.Bukkit;
-import org.bukkit.craftbukkit.v1_20_R3.CraftServer;
+import org.bukkit.craftbukkit.CraftServer;
 
 
 public class RegistryFetcher {
diff --git a/platforms/fabric/build.gradle.kts b/platforms/fabric/build.gradle.kts
index dba268728..58e892e99 100644
--- a/platforms/fabric/build.gradle.kts
+++ b/platforms/fabric/build.gradle.kts
@@ -10,6 +10,12 @@ architectury {
     loader("fabric")
 }
 
+repositories {
+    maven("https://s01.oss.sonatype.org/content/repositories/snapshots/") {
+        name = "Sonatype Snapshots"
+    }
+}
+
 dependencies {
     shadedApi(project(":common:implementation:base"))
 
@@ -26,8 +32,8 @@ dependencies {
 
     modImplementation("net.fabricmc:fabric-loader:${Versions.Mod.fabricLoader}")
 
-    modImplementation("cloud.commandframework", "cloud-fabric", Versions.Libraries.cloud)
-    include("cloud.commandframework", "cloud-fabric", Versions.Libraries.cloud)
+    modImplementation("org.incendo", "cloud-fabric", Versions.Libraries.cloudFabric)
+    include("org.incendo", "cloud-fabric", Versions.Libraries.cloudFabric)
 
     modRuntimeOnly("net.fabricmc.fabric-api", "fabric-api", Versions.Fabric.fabricAPI)
 }
diff --git a/platforms/mixin-lifecycle/build.gradle.kts b/platforms/mixin-lifecycle/build.gradle.kts
index a4e700412..824d3cb46 100644
--- a/platforms/mixin-lifecycle/build.gradle.kts
+++ b/platforms/mixin-lifecycle/build.gradle.kts
@@ -15,7 +15,7 @@ dependencies {
     minecraft("com.mojang:minecraft:${Versions.Mod.minecraft}")
     mappings("net.fabricmc:yarn:${Versions.Mod.yarn}:v2")
 
-    modImplementation("cloud.commandframework", "cloud-fabric", Versions.Libraries.cloud) {
+    modImplementation("org.incendo", "cloud-fabric", Versions.Libraries.cloudFabric) {
         exclude("net.fabricmc")
         exclude("net.fabricmc.fabric-api")
     }
diff --git a/platforms/mixin-lifecycle/src/main/java/com/dfsek/terra/lifecycle/LifecycleEntryPoint.java b/platforms/mixin-lifecycle/src/main/java/com/dfsek/terra/lifecycle/LifecycleEntryPoint.java
index f20038e5e..781536773 100644
--- a/platforms/mixin-lifecycle/src/main/java/com/dfsek/terra/lifecycle/LifecycleEntryPoint.java
+++ b/platforms/mixin-lifecycle/src/main/java/com/dfsek/terra/lifecycle/LifecycleEntryPoint.java
@@ -1,8 +1,7 @@
 package com.dfsek.terra.lifecycle;
 
-import cloud.commandframework.execution.CommandExecutionCoordinator;
-import cloud.commandframework.fabric.FabricServerCommandManager;
 import net.minecraft.server.command.ServerCommandSource;
+import org.incendo.cloud.fabric.FabricServerCommandManager;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;