diff --git a/fabric-biome-api-v1/src/main/java/net/fabricmc/fabric/impl/biome/modification/BiomeModificationImpl.java b/fabric-biome-api-v1/src/main/java/net/fabricmc/fabric/impl/biome/modification/BiomeModificationImpl.java
index 7f5f6c97d..2adaaf425 100644
--- a/fabric-biome-api-v1/src/main/java/net/fabricmc/fabric/impl/biome/modification/BiomeModificationImpl.java
+++ b/fabric-biome-api-v1/src/main/java/net/fabricmc/fabric/impl/biome/modification/BiomeModificationImpl.java
@@ -21,6 +21,7 @@ import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+import java.util.Optional;
 import java.util.function.BiConsumer;
 import java.util.function.Consumer;
 import java.util.function.Predicate;
@@ -35,6 +36,8 @@ import net.minecraft.registry.DynamicRegistryManager;
 import net.minecraft.registry.Registry;
 import net.minecraft.registry.RegistryKey;
 import net.minecraft.registry.RegistryKeys;
+import net.minecraft.registry.SimpleRegistry;
+import net.minecraft.registry.entry.RegistryEntryInfo;
 import net.minecraft.util.Identifier;
 import net.minecraft.world.biome.Biome;
 import net.minecraft.world.gen.feature.util.PlacedFeatureIndexer;
@@ -166,6 +169,12 @@ public class BiomeModificationImpl {
 						);
 					});
 				}
+
+				if (biomes instanceof SimpleRegistry<Biome> registry) {
+					RegistryEntryInfo info = registry.keyToEntryInfo.get(key);
+					RegistryEntryInfo newInfo = new RegistryEntryInfo(Optional.empty(), info.lifecycle());
+					registry.keyToEntryInfo.put(key, newInfo);
+				}
 			}
 		}
 
diff --git a/fabric-biome-api-v1/src/main/resources/fabric-biome-api-v1.accesswidener b/fabric-biome-api-v1/src/main/resources/fabric-biome-api-v1.accesswidener
index 84dfaba87..820a49459 100644
--- a/fabric-biome-api-v1/src/main/resources/fabric-biome-api-v1.accesswidener
+++ b/fabric-biome-api-v1/src/main/resources/fabric-biome-api-v1.accesswidener
@@ -59,3 +59,6 @@ mutable field net/minecraft/world/biome/GenerationSettings allowedFeatures Ljava
 # ChunkGenerator
 accessible field net/minecraft/world/gen/chunk/ChunkGenerator indexedFeaturesListSupplier Ljava/util/function/Supplier;
 mutable field net/minecraft/world/gen/chunk/ChunkGenerator indexedFeaturesListSupplier Ljava/util/function/Supplier;
+
+# Registry mutation sync
+accessible field net/minecraft/registry/SimpleRegistry keyToEntryInfo Ljava/util/Map;
diff --git a/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/mixin/registry/sync/TagManagerLoaderMixin.java b/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/mixin/registry/sync/RegistryKeysMixin.java
similarity index 62%
rename from fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/mixin/registry/sync/TagManagerLoaderMixin.java
rename to fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/mixin/registry/sync/RegistryKeysMixin.java
index b68772797..50e5b9f2a 100644
--- a/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/mixin/registry/sync/TagManagerLoaderMixin.java
+++ b/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/mixin/registry/sync/RegistryKeysMixin.java
@@ -16,28 +16,21 @@
 
 package net.fabricmc.fabric.mixin.registry.sync;
 
-import com.llamalad7.mixinextras.injector.wrapoperation.Operation;
-import com.llamalad7.mixinextras.injector.wrapoperation.WrapOperation;
+import com.llamalad7.mixinextras.injector.ModifyReturnValue;
+import com.llamalad7.mixinextras.sugar.Local;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 
 import net.minecraft.registry.Registry;
 import net.minecraft.registry.RegistryKey;
-import net.minecraft.registry.tag.TagManagerLoader;
+import net.minecraft.registry.RegistryKeys;
 import net.minecraft.util.Identifier;
 
-// Adds namespaces to tag directories for registries added by mods.
-@Mixin(TagManagerLoader.class)
-abstract class TagManagerLoaderMixin {
-	@WrapOperation(
-			method = "buildRequiredGroup",
-			at = @At(
-					value = "INVOKE",
-					target = "Lnet/minecraft/registry/RegistryKeys;getTagPath(Lnet/minecraft/registry/RegistryKey;)Ljava/lang/String;"
-			)
-	)
-	private String prependDirectoryWithNamespace(RegistryKey<? extends Registry<?>> registryKey, Operation<String> original) {
-		Identifier id = registryKey.getValue();
+@Mixin(RegistryKeys.class)
+public class RegistryKeysMixin {
+	@ModifyReturnValue(method = "getTagPath", at = @At("RETURN"))
+	private static String prependDirectoryWithNamespace(String original, @Local(argsOnly = true) RegistryKey<? extends Registry<?>> registryRef) {
+		Identifier id = registryRef.getValue();
 
 		// Vanilla doesn't mark namespaces in the directories of tags at all,
 		// so we prepend the directories with the namespace if it's a modded registry id.
@@ -46,6 +39,6 @@ abstract class TagManagerLoaderMixin {
 			return "tags/" + id.getNamespace() + "/" + id.getPath();
 		}
 
-		return original.call(registryKey);
+		return original;
 	}
 }
diff --git a/fabric-registry-sync-v0/src/main/resources/fabric-registry-sync-v0.mixins.json b/fabric-registry-sync-v0/src/main/resources/fabric-registry-sync-v0.mixins.json
index fb562cdfa..4e7e0480f 100644
--- a/fabric-registry-sync-v0/src/main/resources/fabric-registry-sync-v0.mixins.json
+++ b/fabric-registry-sync-v0/src/main/resources/fabric-registry-sync-v0.mixins.json
@@ -11,11 +11,11 @@
     "MainMixin",
     "RegistriesAccessor",
     "RegistriesMixin",
+    "RegistryKeysMixin",
     "RegistryLoaderMixin",
     "SaveLoadingMixin",
     "SerializableRegistriesMixin",
-    "SimpleRegistryMixin",
-    "TagManagerLoaderMixin"
+    "SimpleRegistryMixin"
   ],
   "injectors": {
     "defaultRequire": 1