diff --git a/README.md b/README.md
index 77959c775..817245416 100644
--- a/README.md
+++ b/README.md
@@ -23,9 +23,9 @@ Canonical English is defined in the typed Java catalogs under `core/src/main/jav
 | Paper / Purpur / Leaf / Canvas | plugin jar | 26.1.2 - 26.2 | Full feature set |
 | Folia | plugin jar | 26.1.2 - 26.2 | Region-safe scheduling throughout |
 | Spigot / CraftBukkit | plugin jar | 26.1.2 - 26.2 | Managed `iris:*` creation and generation; exact vanilla-slot `/iris replace` is unavailable |
-| Fabric | mod jar | 26.2 | Server worldgen + client HUD; requires Fabric Loader 0.19.3+ |
-| Forge | mod jar | 26.2 | Server worldgen + client HUD; current target is Forge 26.2-65.1.1 |
-| NeoForge | mod jar | 26.2 | Server worldgen + client HUD; current target is NeoForge 26.2.0.59 |
+| Fabric | mod jar | 26.3 | Server worldgen + client HUD; requires Fabric Loader 0.19.5+ |
+| Forge | mod jar | 26.3 | Server worldgen + client HUD; current target is Forge 26.3-66.0.8 |
+| NeoForge | mod jar | 26.3 | Server worldgen + client HUD; current target is NeoForge 26.3.0.33-beta |
 
 Java 25 is required on every platform.
 
diff --git a/adapters/fabric/build.gradle b/adapters/fabric/build.gradle
index 2a7d4c17d..3936168bd 100644
--- a/adapters/fabric/build.gradle
+++ b/adapters/fabric/build.gradle
@@ -60,8 +60,8 @@ apply from: file('../../gradle/modded-generation-build-revision.gradle')
 Properties rootProperties = new Properties()
 file('../../gradle.properties').withInputStream { InputStream stream -> rootProperties.load(stream) }
 String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.1.2-26.2'))
-String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.2'))
-String fabricLoaderVersion = providers.gradleProperty('fabricLoaderVersion').getOrElse(rootProperties.getProperty('fabricLoaderVersion', '0.19.3'))
+String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.3'))
+String fabricLoaderVersion = providers.gradleProperty('fabricLoaderVersion').getOrElse(rootProperties.getProperty('fabricLoaderVersion', '0.19.5'))
 String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:master-SNAPSHOT'))
 Closure<String> irisArtifactName = { String platform, String targetVersion ->
     return "Iris v${project.version} [${platform}] ${targetVersion}.jar"
diff --git a/adapters/fabric/src/main/resources/fabric.mod.json b/adapters/fabric/src/main/resources/fabric.mod.json
index 37f76f980..05bafaebb 100644
--- a/adapters/fabric/src/main/resources/fabric.mod.json
+++ b/adapters/fabric/src/main/resources/fabric.mod.json
@@ -70,7 +70,7 @@
     }
   ],
   "depends": {
-    "fabricloader": ">=0.19.3",
+    "fabricloader": ">=0.19.5",
     "minecraft": "~${minecraftVersion}",
     "java": ">=25"
   }
diff --git a/adapters/forge/build.gradle b/adapters/forge/build.gradle
index 5028ad734..8a61c81b3 100644
--- a/adapters/forge/build.gradle
+++ b/adapters/forge/build.gradle
@@ -42,7 +42,7 @@ buildscript {
 
 plugins {
     id 'java'
-    id 'net.minecraftforge.gradle' version '7.0.31'
+    id 'net.minecraftforge.gradle' version '7.0.40'
     alias(libs.plugins.shadow)
 }
 
@@ -60,8 +60,8 @@ apply from: file('../../gradle/modded-generation-build-revision.gradle')
 Properties rootProperties = new Properties()
 file('../../gradle.properties').withInputStream { InputStream stream -> rootProperties.load(stream) }
 String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.1.2-26.2'))
-String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.2'))
-String forgeVersion = providers.gradleProperty('forgeVersion').getOrElse(rootProperties.getProperty('forgeVersion', '26.2-65.1.1'))
+String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.3'))
+String forgeVersion = providers.gradleProperty('forgeVersion').getOrElse(rootProperties.getProperty('forgeVersion', '26.3-66.0.8'))
 String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:master-SNAPSHOT'))
 Closure<String> loaderDisplayVersion = { String loaderVersion ->
     String coordinatePrefix = "${minecraftVersion}-"
@@ -272,7 +272,7 @@ tasks.named('shadowJar', ShadowJar).configure {
         }
     }
     manifest {
-        // FML 26.2 has no TOML mixin handling at all (ModFileParser reads neither [[mixins]] nor
+        // FML 26.3 has no TOML mixin handling at all (ModFileParser reads neither [[mixins]] nor
         // accessTransformers on Forge). This manifest attribute is the only registration mechanism;
         // do not move it into mods.toml.
         attributes('MixinConfigs': 'volmlib.entity.mixins.json,volmlib.client.mixins.json')
diff --git a/adapters/forge/src/main/resources/META-INF/mods.toml b/adapters/forge/src/main/resources/META-INF/mods.toml
index a55737f00..0c267e564 100644
--- a/adapters/forge/src/main/resources/META-INF/mods.toml
+++ b/adapters/forge/src/main/resources/META-INF/mods.toml
@@ -1,5 +1,5 @@
 modLoader = "javafml"
-loaderVersion = "[65,66)"
+loaderVersion = "[66,67)"
 license = "GPL-3.0"
 issueTrackerURL = "https://github.com/VolmitSoftware/Iris/issues"
 
@@ -16,7 +16,7 @@ logoFile = "assets/irisworldgen/icon.png"
 [[dependencies.irisworldgen]]
 modId = "forge"
 mandatory = true
-versionRange = "[65,66)"
+versionRange = "[66,67)"
 ordering = "NONE"
 side = "BOTH"
 
diff --git a/adapters/modded-common/src/main/resources/pack.mcmeta b/adapters/modded-common/src/main/resources/pack.mcmeta
index 1189047ea..b4f9d7069 100644
--- a/adapters/modded-common/src/main/resources/pack.mcmeta
+++ b/adapters/modded-common/src/main/resources/pack.mcmeta
@@ -1,7 +1,7 @@
 {
   "pack": {
     "description": "Iris client resources and mod data",
-    "min_format": [88, 0],
-    "max_format": [107, 1]
+    "min_format": [97, 1],
+    "max_format": [121, 0]
   }
 }
diff --git a/adapters/neoforge/build.gradle b/adapters/neoforge/build.gradle
index 557e7bdd7..5b8f1eb86 100644
--- a/adapters/neoforge/build.gradle
+++ b/adapters/neoforge/build.gradle
@@ -42,7 +42,7 @@ buildscript {
 
 plugins {
     id 'java'
-    id 'net.neoforged.moddev' version '2.0.141'
+    id 'net.neoforged.moddev' version '2.0.147'
     alias(libs.plugins.shadow)
 }
 
@@ -60,8 +60,8 @@ apply from: file('../../gradle/modded-generation-build-revision.gradle')
 Properties rootProperties = new Properties()
 file('../../gradle.properties').withInputStream { InputStream stream -> rootProperties.load(stream) }
 String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.1.2-26.2'))
-String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.2'))
-String neoForgeVersion = providers.gradleProperty('neoForgeVersion').getOrElse(rootProperties.getProperty('neoForgeVersion', '26.2.0.59'))
+String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.3'))
+String neoForgeVersion = providers.gradleProperty('neoForgeVersion').getOrElse(rootProperties.getProperty('neoForgeVersion', '26.3.0.33-beta'))
 String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:master-SNAPSHOT'))
 Closure<String> irisArtifactName = { String platform, String targetVersion ->
     return "Iris v${project.version} [${platform}] ${targetVersion}.jar"
diff --git a/adapters/neoforge/src/main/resources/META-INF/neoforge.mods.toml b/adapters/neoforge/src/main/resources/META-INF/neoforge.mods.toml
index 2c254d9ea..3d7ea0fb6 100644
--- a/adapters/neoforge/src/main/resources/META-INF/neoforge.mods.toml
+++ b/adapters/neoforge/src/main/resources/META-INF/neoforge.mods.toml
@@ -25,7 +25,7 @@ logoFile = "assets/irisworldgen/icon.png"
 [[dependencies.irisworldgen]]
 modId = "neoforge"
 type = "required"
-versionRange = "[26.2,26.3)"
+versionRange = "[26.3,26.4)"
 ordering = "NONE"
 side = "BOTH"
 
diff --git a/build.gradle b/build.gradle
index a4a6eb464..b4269ebad 100644
--- a/build.gradle
+++ b/build.gradle
@@ -70,12 +70,12 @@ project(':core') {
     group = 'art.arcane'
     version = rootProject.version
 }
-String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse('26.2')
-// The Bukkit jar retains 26.1.2 and 26.2 alongside 26.3; loader jars stay 26.2-only.
+String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse('26.3')
+// The Bukkit jar retains 26.1.2 and 26.2 alongside 26.3; loader jars are 26.3-only.
 String bukkitMinecraftRange = providers.gradleProperty('bukkitMinecraftRange').getOrElse('26.1.2-26.3')
-String fabricLoaderVersion = providers.gradleProperty('fabricLoaderVersion').getOrElse('0.19.3')
-String forgeVersion = providers.gradleProperty('forgeVersion').getOrElse('26.2-65.1.1')
-String neoForgeVersion = providers.gradleProperty('neoForgeVersion').getOrElse('26.2.0.59')
+String fabricLoaderVersion = providers.gradleProperty('fabricLoaderVersion').getOrElse('0.19.5')
+String forgeVersion = providers.gradleProperty('forgeVersion').getOrElse('26.3-66.0.8')
+String neoForgeVersion = providers.gradleProperty('neoForgeVersion').getOrElse('26.3.0.33-beta')
 String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate')
     .orElse('com.github.VolmitSoftware:VolmLib:master-SNAPSHOT')
     .get()
@@ -997,15 +997,8 @@ project(':adapters:bukkit:nms:v26_3_R1') {
     TaskProvider<Sync> unpackHeadlessNativeSources = tasks.register('unpackHeadlessNativeSources', Sync) {
         dependsOn(headlessNativeSources)
         inputs.property('nativeTypes', headlessNativeTypes)
-        inputs.property('nativeVersion', '26.3')
         from(provider { headlessNativeSources.collect { File artifact -> zipTree(artifact) } }) {
             headlessNativeTypes.each { String type -> include("art/arcane/volmlib/nativelib/minecraft26_2/modded/${type}.java") }
-            include('versions/26.3/**')
-            eachFile { FileCopyDetails source ->
-                if (source.path.startsWith('versions/26.3/')) {
-                    source.path = source.path.substring('versions/26.3/'.length())
-                }
-            }
         }
         from(rootProject.file('adapters/modded-common/src/main/java')) {
             include('art/arcane/iris/modded/ModdedDecoratorHooks.java',
diff --git a/gradle.properties b/gradle.properties
index 15d565080..013f417af 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -22,10 +22,10 @@ org.gradle.caching=true
 org.gradle.configureondemand=false
 
 irisVersion=4.1.2-26.2
-minecraftVersion=26.2
+minecraftVersion=26.3
 # Bukkit plugin api-version: lowest supported Minecraft release line so one artifact loads on 26.1.2 and 26.2
 apiVersion=26.1
-fabricLoaderVersion=0.19.3
-forgeVersion=26.2-65.1.1
-neoForgeVersion=26.2.0.59
+fabricLoaderVersion=0.19.5
+forgeVersion=26.3-66.0.8
+neoForgeVersion=26.3.0.33-beta
 volmLibCoordinate=com.github.VolmitSoftware.VolmLib:volmlib-shared:d24d28acddbf3555c0c30ac99569ebacd476ce27
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 79cfae060..0579cc126 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -49,16 +49,16 @@ multiverseCore = "5.8.0"
 craftengine = "26.8.2" # https://github.com/Xiao-MoMi/craft-engine/releases
 
 # Fabric API (net.fabricmc.fabric-api) - each module is independently versioned
-fabricApi-base = "2.0.4+ece063239e"
-fabricApi-registrySync = "7.1.0+c7bd5b8e9e"
-fabricApi-resourceLoader = "2.0.13+9edec1269e"
-fabricApi-lifecycleEvents = "4.1.3+4575b05f9e"
-fabricApi-commandApi = "3.1.0+00cb03469e"
-fabricApi-eventsInteraction = "5.2.6+8f57f7ee9e"
-fabricApi-networking = "6.3.3+72073ef09e"
-fabricApi-rendering = "25.3.1+6988455e9e"
-fabricApi-keyMapping = "2.0.5+e2bdee789e"
-fabricApi-permission = "1.0.3+b7020ca29e"
+fabricApi-base = "2.0.6+fcdff87f5d"
+fabricApi-registrySync = "8.0.1+fcdff87f5d"
+fabricApi-resourceLoader = "3.0.4+fcdff87f5d"
+fabricApi-lifecycleEvents = "4.1.9+ffef5f675d"
+fabricApi-commandApi = "3.1.2+fcdff87f5d"
+fabricApi-eventsInteraction = "5.3.6+3434d6d95d"
+fabricApi-networking = "6.3.8+fcdff87f5d"
+fabricApi-rendering = "27.0.14+901a437c5d"
+fabricApi-keyMapping = "2.0.8+3434d6d95d"
+fabricApi-permission = "1.0.8+fcdff87f5d"
 
 [libraries]
 # Core Libraries
diff --git a/gradle/native-minecraft-sources.gradle b/gradle/native-minecraft-sources.gradle
index 4f21047ea..4cc8201af 100644
--- a/gradle/native-minecraft-sources.gradle
+++ b/gradle/native-minecraft-sources.gradle
@@ -9,7 +9,7 @@ String nativeLibraryCoordinate = providers.gradleProperty('volmLibCoordinate')
     .getOrElse(nativeLibraryProperties.getProperty('volmLibCoordinate'))
 String nativeSourceLoader = extensions.extraProperties.get('nativeSourceLoader')
 String nativeSourceImplementation = 'minecraft26_2'
-String nativeSourceMinecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse('26.2')
+String nativeSourceMinecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse('26.3')
 extensions.extraProperties.set('nativeSourceImplementation', nativeSourceImplementation)
 dependencies.add(nativeMinecraftSources.name,
     "com.github.VolmitSoftware.VolmLib:native-${nativeSourceImplementation}-sources:${nativeLibraryCoordinate.tokenize(':').last()}")