diff --git a/coremods/src/main/java/net/neoforged/neoforge/coremods/MethodRedirector.java b/coremods/src/main/java/net/neoforged/neoforge/coremods/MethodRedirector.java
index 8db3d7486d..d3bb0616c8 100644
--- a/coremods/src/main/java/net/neoforged/neoforge/coremods/MethodRedirector.java
+++ b/coremods/src/main/java/net/neoforged/neoforge/coremods/MethodRedirector.java
@@ -32,13 +32,13 @@ public class MethodRedirector implements ITransformer<ClassNode> {
             new MethodRedirection(
                     Opcodes.INVOKEVIRTUAL,
                     "finalizeSpawn",
-                    "(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/MobSpawnType;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;",
+                    "(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/EntitySpawnReason;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;",
                     "finalize_spawn_targets.json",
                     methodInsnNode -> new MethodInsnNode(
                             Opcodes.INVOKESTATIC,
                             "net/neoforged/neoforge/event/EventHooks",
                             "finalizeMobSpawn",
-                            "(Lnet/minecraft/world/entity/Mob;Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/MobSpawnType;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;",
+                            "(Lnet/minecraft/world/entity/Mob;Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/EntitySpawnReason;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;",
                             false)));
 
     public MethodRedirector() {