diff --git a/platforms/fabric/src/main/java/com/dfsek/terra/fabric/TerraFabricPlugin.java b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/TerraFabricPlugin.java
index 0bfe69dbc..9cfb726eb 100644
--- a/platforms/fabric/src/main/java/com/dfsek/terra/fabric/TerraFabricPlugin.java
+++ b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/TerraFabricPlugin.java
@@ -43,6 +43,7 @@ import com.dfsek.terra.fabric.generation.PopulatorFeature;
 import com.dfsek.terra.fabric.generation.TerraBiomeSource;
 import com.dfsek.terra.fabric.handle.FabricItemHandle;
 import com.dfsek.terra.fabric.handle.FabricWorldHandle;
+import com.dfsek.terra.fabric.util.ProtoBiome;
 import com.dfsek.terra.profiler.Profiler;
 import com.dfsek.terra.profiler.ProfilerImpl;
 import com.dfsek.terra.registry.exception.DuplicateEntryException;
@@ -120,9 +121,16 @@ public class TerraFabricPlugin implements TerraPlugin, ModInitializer {
 
     private final PluginConfig config = new PluginConfig();
 
-    private final Transformer<String, Biome> biomeFixer = new Transformer.Builder<String, Biome>()
-            .addTransform(id -> BuiltinRegistries.BIOME.get(Identifier.tryParse(id)), Validator.notNull())
-            .addTransform(id -> BuiltinRegistries.BIOME.get(Identifier.tryParse("minecraft:" + id.toLowerCase())), Validator.notNull()).build();
+    private final Transformer<String, ProtoBiome> biomeFixer = new Transformer.Builder<String, ProtoBiome>()
+            .addTransform(this::parseBiome, Validator.notNull())
+            .addTransform(id -> parseBiome("minecraft:" + id.toLowerCase()), Validator.notNull()).build();
+
+    private ProtoBiome parseBiome(String id) {
+        Identifier identifier = Identifier.tryParse(id);
+        if(BuiltinRegistries.BIOME.get(identifier) == null) return null; // failure.
+        return new ProtoBiome(identifier);
+    }
+
     private File dataFolder;
     private final CommandManager manager = new TerraCommandManager(this);
 
diff --git a/platforms/fabric/src/main/java/com/dfsek/terra/fabric/generation/TerraGeneratorType.java b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/generation/TerraGeneratorType.java
index ec89f02c3..cfecda8a2 100644
--- a/platforms/fabric/src/main/java/com/dfsek/terra/fabric/generation/TerraGeneratorType.java
+++ b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/generation/TerraGeneratorType.java
@@ -5,8 +5,10 @@ import com.dfsek.terra.fabric.TerraFabricPlugin;
 import com.dfsek.terra.fabric.util.FabricUtil;
 import net.minecraft.client.world.GeneratorType;
 import net.minecraft.util.Identifier;
+import net.minecraft.util.registry.DynamicRegistryManager;
 import net.minecraft.util.registry.Registry;
 import net.minecraft.world.biome.Biome;
+import net.minecraft.world.gen.GeneratorOptions;
 import net.minecraft.world.gen.chunk.ChunkGenerator;
 import net.minecraft.world.gen.chunk.ChunkGeneratorSettings;
 
@@ -18,9 +20,16 @@ public class TerraGeneratorType extends GeneratorType {
         this.pack = pack;
     }
 
+    @Override
+    public GeneratorOptions createDefaultOptions(DynamicRegistryManager.Impl registryManager, long seed, boolean generateStructures, boolean bonusChest) {
+        GeneratorOptions options = super.createDefaultOptions(registryManager, seed, generateStructures, bonusChest);
+        Registry<Biome> biomeRegistry = registryManager.get(Registry.BIOME_KEY);
+        TerraFabricPlugin.getInstance().getConfigRegistry().forEach(pack -> pack.getBiomeRegistry().forEach((id, biome) -> Registry.register(biomeRegistry, new Identifier("terra", FabricUtil.createBiomeID(pack, id)), FabricUtil.createBiome(TerraFabricPlugin.getInstance().getFabricAddon(), biome, pack, registryManager)))); // Register all Terra biomes.
+        return options;
+    }
+
     @Override
     protected ChunkGenerator getChunkGenerator(Registry<Biome> biomeRegistry, Registry<ChunkGeneratorSettings> chunkGeneratorSettingsRegistry, long seed) {
-        TerraFabricPlugin.getInstance().getConfigRegistry().forEach(pack -> pack.getBiomeRegistry().forEach((id, biome) -> Registry.register(biomeRegistry, new Identifier("terra", FabricUtil.createBiomeID(pack, id)), FabricUtil.createBiome(TerraFabricPlugin.getInstance().getFabricAddon(), biome, pack)))); // Register all Terra biomes.
         return new FabricChunkGeneratorWrapper(new TerraBiomeSource(biomeRegistry, seed, pack), seed, pack);
     }
 }
diff --git a/platforms/fabric/src/main/java/com/dfsek/terra/fabric/util/FabricUtil.java b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/util/FabricUtil.java
index c761cade4..0f5edafcd 100644
--- a/platforms/fabric/src/main/java/com/dfsek/terra/fabric/util/FabricUtil.java
+++ b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/util/FabricUtil.java
@@ -9,7 +9,8 @@ import com.dfsek.terra.fabric.config.PostLoadCompatibilityOptions;
 import com.dfsek.terra.fabric.config.PreLoadCompatibilityOptions;
 import com.dfsek.terra.fabric.mixin.access.BiomeEffectsAccessor;
 import net.minecraft.util.Identifier;
-import net.minecraft.util.registry.BuiltinRegistries;
+import net.minecraft.util.registry.DynamicRegistryManager;
+import net.minecraft.util.registry.Registry;
 import net.minecraft.world.biome.Biome;
 import net.minecraft.world.biome.BiomeEffects;
 import net.minecraft.world.biome.GenerationSettings;
@@ -37,11 +38,12 @@ public final class FabricUtil {
      * @param pack        The ConfigPack this biome belongs to.
      * @return The Minecraft delegate biome.
      */
-    public static Biome createBiome(TerraFabricPlugin.FabricAddon fabricAddon, BiomeBuilder biome, ConfigPack pack) {
+    public static Biome createBiome(TerraFabricPlugin.FabricAddon fabricAddon, BiomeBuilder biome, ConfigPack pack, DynamicRegistryManager.Impl registryManager) {
         BiomeTemplate template = biome.getTemplate();
         Map<String, Integer> colors = template.getColors();
 
-        Biome vanilla = (Biome) (new ArrayList<>(biome.getVanillaBiomes().getContents()).get(0)).getHandle();
+        Registry<Biome> biomeRegistry = registryManager.get(Registry.BIOME_KEY);
+        Biome vanilla = ((ProtoBiome) (new ArrayList<>(biome.getVanillaBiomes().getContents()).get(0))).get(biomeRegistry);
 
         GenerationSettings.Builder generationSettings = new GenerationSettings.Builder();
 
@@ -63,8 +65,9 @@ public final class FabricUtil {
 
         TerraFabricPlugin.getInstance().getDebugLogger().info("Injecting Vanilla structures and features into Terra biome " + biome.getTemplate().getID());
 
+        Registry<ConfiguredStructureFeature<?, ?>> configuredStructureFeatureRegistry = registryManager.get(Registry.CONFIGURED_STRUCTURE_FEATURE_KEY);
         for(Supplier<ConfiguredStructureFeature<?, ?>> structureFeature : vanilla.getGenerationSettings().getStructureFeatures()) {
-            Identifier key = BuiltinRegistries.CONFIGURED_STRUCTURE_FEATURE.getId(structureFeature.get());
+            Identifier key = configuredStructureFeatureRegistry.getId(structureFeature.get());
             if(!compatibilityOptions.getExcludedBiomeStructures().contains(key) && !postLoadCompatibilityOptions.getExcludedPerBiomeStructures().getOrDefault(biome, Collections.emptySet()).contains(key)) {
                 generationSettings.structureFeature(structureFeature.get());
                 TerraFabricPlugin.getInstance().getDebugLogger().info("Injected structure " + key);
@@ -72,9 +75,10 @@ public final class FabricUtil {
         }
 
         if(compatibilityOptions.doBiomeInjection()) {
+            Registry<ConfiguredFeature<?, ?>> configuredFeatureRegistry = registryManager.get(Registry.CONFIGURED_FEATURE_KEY);
             for(int step = 0; step < vanilla.getGenerationSettings().getFeatures().size(); step++) {
                 for(Supplier<ConfiguredFeature<?, ?>> featureSupplier : vanilla.getGenerationSettings().getFeatures().get(step)) {
-                    Identifier key = BuiltinRegistries.CONFIGURED_FEATURE.getId(featureSupplier.get());
+                    Identifier key = configuredFeatureRegistry.getId(featureSupplier.get());
                     if(!compatibilityOptions.getExcludedBiomeFeatures().contains(key) && !postLoadCompatibilityOptions.getExcludedPerBiomeFeatures().getOrDefault(biome, Collections.emptySet()).contains(key)) {
                         generationSettings.feature(step, featureSupplier);
                         TerraFabricPlugin.getInstance().getDebugLogger().info("Injected feature " + key + " at stage " + step);
diff --git a/platforms/fabric/src/main/java/com/dfsek/terra/fabric/util/ProtoBiome.java b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/util/ProtoBiome.java
new file mode 100644
index 000000000..a7ff41ecd
--- /dev/null
+++ b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/util/ProtoBiome.java
@@ -0,0 +1,22 @@
+package com.dfsek.terra.fabric.util;
+
+import com.dfsek.terra.api.platform.world.Biome;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.registry.Registry;
+
+public class ProtoBiome implements Biome {
+    private final Identifier identifier;
+
+    public ProtoBiome(Identifier identifier) {
+        this.identifier = identifier;
+    }
+
+    public net.minecraft.world.biome.Biome get(Registry<net.minecraft.world.biome.Biome> registry) {
+        return registry.get(identifier);
+    }
+
+    @Override
+    public Object getHandle() {
+        return identifier;
+    }
+}