diff --git a/gradle.properties b/gradle.properties
index de35d79f..5dce810b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -19,7 +19,7 @@ fabric_api_version=0.100.0+1.21
 mod_menu_version=11.0.1
 
 forge_version=51.0.0
-neoforge_version=21.0.42-beta
+neoforge_version=21.0.78-beta
 
 # Set to empty if not snapshots
 neoforge_pr=
diff --git a/neoforge/src/main/java/dev/architectury/registry/forge/CreativeTabRegistryImpl.java b/neoforge/src/main/java/dev/architectury/registry/forge/CreativeTabRegistryImpl.java
index ac9e492e..7e84b80a 100644
--- a/neoforge/src/main/java/dev/architectury/registry/forge/CreativeTabRegistryImpl.java
+++ b/neoforge/src/main/java/dev/architectury/registry/forge/CreativeTabRegistryImpl.java
@@ -63,13 +63,13 @@ public class CreativeTabRegistryImpl {
                 if (keyEntry.getKey() instanceof TabKey.SupplierTabKey supplierTabKey) {
                     if (Objects.equals(CreativeModeTabRegistry.getName(event.getTab()), supplierTabKey.supplier().getId())) {
                         for (ItemStack stack : stacks.get()) {
-                            event.getEntries().put(stack, CreativeModeTab.TabVisibility.PARENT_AND_SEARCH_TABS);
+                            event.accept(stack, CreativeModeTab.TabVisibility.PARENT_AND_SEARCH_TABS);
                         }
                     }
                 } else if (keyEntry.getKey() instanceof TabKey.DirectTabKey directTabKey) {
                     if (event.getTab().equals(directTabKey.tab())) {
                         for (ItemStack stack : stacks.get()) {
-                            event.getEntries().put(stack, CreativeModeTab.TabVisibility.PARENT_AND_SEARCH_TABS);
+                            event.accept(stack, CreativeModeTab.TabVisibility.PARENT_AND_SEARCH_TABS);
                         }
                     }
                 }
@@ -161,44 +161,24 @@ public static void modify(DeferredSupplier<CreativeModeTab> tab, CreativeTabRegi
         BUILD_CONTENTS_LISTENERS.add(event -> {
             if (tab.isPresent()) {
                 if (event.getTab().equals(tab.get())) {
-                    filler.accept(event.getFlags(), wrapTabOutput(event.getEntries()), event.hasPermissions());
+                    filler.accept(event.getFlags(), wrapTabOutput(event), event.hasPermissions());
                 }
             } else if (Objects.equals(CreativeModeTabRegistry.getName(event.getTab()), tab.getId())) {
-                filler.accept(event.getFlags(), wrapTabOutput(event.getEntries()), event.hasPermissions());
+                filler.accept(event.getFlags(), wrapTabOutput(event), event.hasPermissions());
             }
         });
     }
     
-    private static CreativeTabOutput wrapTabOutput(MutableHashedLinkedMap<ItemStack, CreativeModeTab.TabVisibility> entries) {
+    private static CreativeTabOutput wrapTabOutput(BuildCreativeModeTabContentsEvent event) {
         return new CreativeTabOutput() {
             @Override
             public void acceptAfter(ItemStack after, ItemStack stack, CreativeModeTab.TabVisibility visibility) {
-                if (after.isEmpty()) {
-                    entries.put(stack, visibility);
-                } else {
-                    for (Map.Entry<ItemStack, CreativeModeTab.TabVisibility> entry : entries) {
-                        if (ItemStack.isSameItemSameComponents(entry.getKey(), after)) {
-                            after = entry.getKey();
-                            break;
-                        }
-                    }
-                    entries.putAfter(after, stack, visibility);
-                }
+                event.insertAfter(after, stack, visibility);
             }
             
             @Override
             public void acceptBefore(ItemStack before, ItemStack stack, CreativeModeTab.TabVisibility visibility) {
-                if (before.isEmpty()) {
-                    entries.put(stack, visibility);
-                } else {
-                    for (Map.Entry<ItemStack, CreativeModeTab.TabVisibility> entry : entries) {
-                        if (ItemStack.isSameItemSameComponents(entry.getKey(), before)) {
-                            before = entry.getKey();
-                            break;
-                        }
-                    }
-                    entries.putBefore(before, stack, visibility);
-                }
+                event.insertBefore(before, stack, visibility);
             }
         };
     }
diff --git a/neoforge/src/main/java/dev/architectury/registry/level/entity/forge/SpawnPlacementsRegistryImpl.java b/neoforge/src/main/java/dev/architectury/registry/level/entity/forge/SpawnPlacementsRegistryImpl.java
index ee54d751..37b1254f 100644
--- a/neoforge/src/main/java/dev/architectury/registry/level/entity/forge/SpawnPlacementsRegistryImpl.java
+++ b/neoforge/src/main/java/dev/architectury/registry/level/entity/forge/SpawnPlacementsRegistryImpl.java
@@ -26,7 +26,7 @@
 import net.minecraft.world.entity.SpawnPlacementType;
 import net.minecraft.world.entity.SpawnPlacements;
 import net.minecraft.world.level.levelgen.Heightmap;
-import net.neoforged.neoforge.event.entity.SpawnPlacementRegisterEvent;
+import net.neoforged.neoforge.event.entity.RegisterSpawnPlacementsEvent;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -42,10 +42,10 @@ private record Entry<T extends Mob>(Supplier<? extends EntityType<T>> type, Spaw
     
     static {
         EventBusesHooks.whenAvailable(ArchitecturyConstants.MOD_ID, bus -> {
-            bus.<SpawnPlacementRegisterEvent>addListener(event -> {
+            bus.<RegisterSpawnPlacementsEvent>addListener(event -> {
                 for (Entry<?> entry : entries) {
                     Entry<Mob> casted = (Entry<Mob>) entry;
-                    event.register(casted.type().get(), casted.spawnPlacement(), casted.heightmapType(), casted.spawnPredicate(), SpawnPlacementRegisterEvent.Operation.OR);
+                    event.register(casted.type().get(), casted.spawnPlacement(), casted.heightmapType(), casted.spawnPredicate(), RegisterSpawnPlacementsEvent.Operation.OR);
                 }
                 entries = null;
             });
diff --git a/neoforge/src/main/java/dev/architectury/registry/registries/forge/RegistrarManagerImpl.java b/neoforge/src/main/java/dev/architectury/registry/registries/forge/RegistrarManagerImpl.java
index 9aec8712..089ba8d0 100644
--- a/neoforge/src/main/java/dev/architectury/registry/registries/forge/RegistrarManagerImpl.java
+++ b/neoforge/src/main/java/dev/architectury/registry/registries/forge/RegistrarManagerImpl.java
@@ -286,6 +286,11 @@ public Holder<E> getHolder() {
                     return holder = registrar.getHolder(getId());
                 }
                 
+                @Override
+                public ResourceKey<E> getKey() {
+                    return RegistrySupplierImpl.super.getKey();
+                }
+                
                 @Override
                 public RegistrarManager getRegistrarManager() {
                     return RegistrarManager.get(modId);
diff --git a/neoforge/src/main/resources/META-INF/neoforge.mods.toml b/neoforge/src/main/resources/META-INF/neoforge.mods.toml
index 8be17fc4..7a5e9b68 100644
--- a/neoforge/src/main/resources/META-INF/neoforge.mods.toml
+++ b/neoforge/src/main/resources/META-INF/neoforge.mods.toml
@@ -24,7 +24,7 @@ side = "BOTH"
 [[dependencies.architectury]]
 modId = "neoforge"
 type = "required"
-versionRange = "[21.0.40-beta,)"
+versionRange = "[21.0.78-beta,)"
 ordering = "NONE"
 side = "BOTH"