diff --git a/common/src/main/java/github/killarexe/copper_extension/CEMod.java b/common/src/main/java/github/killarexe/copper_extension/CEMod.java
index 423c21e..3680344 100644
--- a/common/src/main/java/github/killarexe/copper_extension/CEMod.java
+++ b/common/src/main/java/github/killarexe/copper_extension/CEMod.java
@@ -6,6 +6,6 @@ public class CEMod {
   public static final String MOD_ID = "copper_extension";
 
   public static ResourceLocation id(String id) {
-    return new ResourceLocation(MOD_ID, id);
+    return ResourceLocation.fromNamespaceAndPath(MOD_ID, id);
   }
 }
diff --git a/fabric/src/main/java/github/killarexe/copper_extension/fabric/registry/CEItems.java b/fabric/src/main/java/github/killarexe/copper_extension/fabric/registry/CEItems.java
index d294db0..cf8b69e 100644
--- a/fabric/src/main/java/github/killarexe/copper_extension/fabric/registry/CEItems.java
+++ b/fabric/src/main/java/github/killarexe/copper_extension/fabric/registry/CEItems.java
@@ -18,7 +18,7 @@ public class CEItems {
 	
 	public static final FabricScrapableItem WAXED_COPPER_INGOT = createItem(
     "waxed_copper_ingot",
-    new FabricScrapableItem(new Item.Properties(), new ResourceLocation("minecraft", "copper_ingot"))
+    new FabricScrapableItem(new Item.Properties(), ResourceLocation.withDefaultNamespace("copper_ingot"))
   );
 	
   public static final FabricScrapableItem WAXED_EXPOSED_COPPER_INGOT = createItem(
@@ -38,7 +38,7 @@ public class CEItems {
 	
 	public static final FabricRustableItem EXPOSED_COPPER_INGOT = createItem("exposed_copper_ingot", new FabricRustableItem(
 			new Item.Properties(),
-			new ResourceLocation("minecraft", "copper_ingot"),
+			ResourceLocation.withDefaultNamespace( "copper_ingot"),
 			CEMod.id("waxed_exposed_copper_ingot"),
 			CEMod.id("weathered_copper_ingot"))
 	);
@@ -54,7 +54,7 @@ public class CEItems {
 	
 	public static void register() {
 		ITEMS.forEach((id, item) -> {
-			Registry.register(BuiltInRegistries.ITEM, new ResourceLocation(CEMod.MOD_ID, id), item);
+			Registry.register(BuiltInRegistries.ITEM, CEMod.id(id), item);
 			ItemGroupEvents.modifyEntriesEvent(CreativeModeTabs.INGREDIENTS).register((group) -> {
 				group.accept(item);
 			});
diff --git a/gradle.properties b/gradle.properties
index 674cea1..ad21476 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,12 +4,12 @@ org.gradle.parallel=true
 org.gradle.deamon=false
 
 #Common settings
-minecraft_version=1.20.6
+minecraft_version=1.21
 enabled_platforms=fabric,neoforge
 
 mod_id=copper_extension
 mod_name=Copper Extension
-mod_version=1.3.0
+mod_version=1.3.1
 
 mod_contributors=junshengxie
 mod_license=CC-BY-4.0
@@ -23,13 +23,13 @@ maven_group=github.killarexe.copper_extension
 
 #Fabric settings
 fabric_loader_version=0.15.11
-fabric_api_version=0.99.4+1.20.6
+fabric_api_version=0.100.1+1.21
 fabric_mod_sources=https://github.com/Killarexe/Copper-Extension
 fabric_mod_main=github.killarexe.copper_extension.fabric.CEFabric
 
 #Forge settings
-neoforge_version=20.6.99-beta
-neoforge_minecraft_version_range=[1.20.6,1.21)
-neoforge_version_range=[20.6,)
-neoforge_loader_version_range=[2,)
+neoforge_version=21.0.0-beta
+neoforge_minecraft_version_range=[1.21,1.22)
+neoforge_version_range=[21.0.0-beta,)
+neoforge_loader_version_range=[4,)
 neoforge_update_json_url=https://raw.githubusercontent.com/Killarexe/Copper-Extension/master/neoforge/update.json
diff --git a/neoforge/src/main/java/github/killarexe/copper_extension/neoforge/registry/CEItems.java b/neoforge/src/main/java/github/killarexe/copper_extension/neoforge/registry/CEItems.java
index f6fa286..c6cbb56 100644
--- a/neoforge/src/main/java/github/killarexe/copper_extension/neoforge/registry/CEItems.java
+++ b/neoforge/src/main/java/github/killarexe/copper_extension/neoforge/registry/CEItems.java
@@ -17,7 +17,7 @@ public class CEItems {
 
   public static final Supplier<NeoForgeScrapableItem> WAXED_COPPER_INGOT = ITEMS.register(
 		"waxed_copper_ingot",
-		() -> new NeoForgeScrapableItem(new Item.Properties(), new ResourceLocation( "copper_ingot"))
+		() -> new NeoForgeScrapableItem(new Item.Properties(), ResourceLocation.withDefaultNamespace( "copper_ingot"))
 	);
 	
 	public static final Supplier<NeoForgeScrapableItem> WAXED_EXPOSED_COPPER_INGOT = ITEMS.register(
@@ -39,7 +39,7 @@ public class CEItems {
 		"exposed_copper_ingot",
 		() -> new NeoForgeRustableItem(
 			new Item.Properties(),
-			new ResourceLocation("copper_ingot"),
+			ResourceLocation.withDefaultNamespace("copper_ingot"),
 			CEMod.id("waxed_exposed_copper_ingot"),
 			CEMod.id("weathered_copper_ingot")
 		)