diff --git a/build.gradle b/build.gradle
index 59e7abd..034cb38 100644
--- a/build.gradle
+++ b/build.gradle
@@ -23,7 +23,7 @@ dependencies
 	mappings loom.layered()
 	{
 		officialMojangMappings()
-		parchment("org.parchmentmc.data:parchment-${project.minecraft_version}:${project.mappings_version}@zip")
+		parchment("org.parchmentmc.data:parchment-${project.mappings_version}@zip")
 	}
 
 	modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
diff --git a/gradle.properties b/gradle.properties
index 63d39f9..cd2b10b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -5,9 +5,9 @@ org.gradle.parallel=true
 # Fabric Properties
 	# https://fabricmc.net/develop
 	# https://parchmentmc.org/docs/getting-started
-	minecraft_version=1.20.6
+	minecraft_version=1.21
 	loader_version=0.15.11
-	mappings_version=2024.05.01
+	mappings_version=1.20.6:2024.06.02
 
 # Mod Properties
 	mod_version=1.1
@@ -15,4 +15,4 @@ org.gradle.parallel=true
 	archives_base_name=IronDoorKey
 
 # Dependencies
-	fabric_version=0.99.0+1.20.6
+	fabric_version=0.100.1+1.21
diff --git a/src/main/java/com/mt1006/irondoorkey/IronDoorKeyMod.java b/src/main/java/com/mt1006/irondoorkey/IronDoorKeyMod.java
index 5aa3a4c..43a7141 100644
--- a/src/main/java/com/mt1006/irondoorkey/IronDoorKeyMod.java
+++ b/src/main/java/com/mt1006/irondoorkey/IronDoorKeyMod.java
@@ -17,17 +17,17 @@ public class IronDoorKeyMod implements ModInitializer
 {
 	public static final String MOD_ID = "irondoorkey";
 	public static final String VERSION = "1.1";
-	public static final String FOR_VERSION = "1.20.6";
+	public static final String FOR_VERSION = "1.21";
 	public static final String FOR_LOADER = "Fabric";
 	public static final Logger LOGGER = LogUtils.getLogger();
 
 	public static final Item ITEM_IRON_DOOR_KEY = new IronDoorKeyItem();
-	public static final TagKey<Block> OPENABLE = TagKey.create(Registries.BLOCK, new ResourceLocation(MOD_ID, "openable"));
+	public static final TagKey<Block> OPENABLE = TagKey.create(Registries.BLOCK, ResourceLocation.fromNamespaceAndPath(MOD_ID, "openable"));
 
 	@Override public void onInitialize()
 	{
 		LOGGER.info("{} - Author: mt1006", getFullName());
-		Registry.register(BuiltInRegistries.ITEM, new ResourceLocation(MOD_ID, "iron_door_key"), ITEM_IRON_DOOR_KEY);
+		Registry.register(BuiltInRegistries.ITEM, ResourceLocation.fromNamespaceAndPath(MOD_ID, "iron_door_key"), ITEM_IRON_DOOR_KEY);
 
 		ItemGroupEvents.modifyEntriesEvent(CreativeModeTabs.TOOLS_AND_UTILITIES)
 				.register(content -> content.accept(ITEM_IRON_DOOR_KEY));
diff --git a/src/main/resources/data/irondoorkey/recipes/iron_door_key.json b/src/main/resources/data/irondoorkey/recipe/iron_door_key.json
similarity index 100%
rename from src/main/resources/data/irondoorkey/recipes/iron_door_key.json
rename to src/main/resources/data/irondoorkey/recipe/iron_door_key.json
diff --git a/src/main/resources/data/irondoorkey/tags/blocks/openable.json b/src/main/resources/data/irondoorkey/tags/block/openable.json
similarity index 100%
rename from src/main/resources/data/irondoorkey/tags/blocks/openable.json
rename to src/main/resources/data/irondoorkey/tags/block/openable.json
diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json
index 5b96ab3..482db7a 100644
--- a/src/main/resources/fabric.mod.json
+++ b/src/main/resources/fabric.mod.json
@@ -24,7 +24,7 @@
 
 	"depends":
 	{
-		"minecraft": "~1.20.5",
+		"minecraft": ">=1.21",
 		"fabricloader": ">=0.15.0",
 		"fabric-api": "*",
 		"java": ">=21"