diff --git a/src/main/resources/accessor.mixin.json b/src/main/resources/accessor.mixin.json
index 463719441..be509346a 100644
--- a/src/main/resources/accessor.mixin.json
+++ b/src/main/resources/accessor.mixin.json
@@ -1,7 +1,7 @@
 {
   "required": true,
   "package": "one.oktw.galaxy.mixin.accessor",
-  "compatibilityLevel": "JAVA_16",
+  "compatibilityLevel": "JAVA_21",
   "mixins": [
     "BeaconLevelAccessor",
     "PlayerAbilitiesAccessor",
diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json
index 4de5be9cc..9784dda85 100644
--- a/src/main/resources/fabric.mod.json
+++ b/src/main/resources/fabric.mod.json
@@ -27,8 +27,8 @@
     "recipe.mixin.json"
   ],
   "depends": {
-    "minecraft": "1.20.x",
-    "fabricloader": ">=0.14.21",
+    "minecraft": "1.21.x",
+    "fabricloader": ">=0.15.11",
     "fabric": ">=0.83.0"
   },
   "suggests": {}
diff --git a/src/main/resources/galaxy.mixin.json b/src/main/resources/galaxy.mixin.json
index 07f25f563..d24c4da9e 100644
--- a/src/main/resources/galaxy.mixin.json
+++ b/src/main/resources/galaxy.mixin.json
@@ -1,7 +1,7 @@
 {
   "required": true,
   "package": "one.oktw.galaxy.mixin.event",
-  "compatibilityLevel": "JAVA_16",
+  "compatibilityLevel": "JAVA_21",
   "mixins": [
     "MixinPlayerAction_NetworkHandler",
     "MixinPlayerChat_MeCommand",
diff --git a/src/main/resources/recipe.mixin.json b/src/main/resources/recipe.mixin.json
index be86022fa..b73244802 100644
--- a/src/main/resources/recipe.mixin.json
+++ b/src/main/resources/recipe.mixin.json
@@ -1,7 +1,7 @@
 {
   "required": true,
   "package": "one.oktw.galaxy.mixin.recipe",
-  "compatibilityLevel": "JAVA_16",
+  "compatibilityLevel": "JAVA_21",
   "mixins": [
     "MixinCustomRecipe_CraftingResultSlot",
     "MixinCustomRecipe_RecipeManager"
diff --git a/src/main/resources/sponge.realtime.mixin.json b/src/main/resources/sponge.realtime.mixin.json
index 4c9e2247b..91fa1458c 100644
--- a/src/main/resources/sponge.realtime.mixin.json
+++ b/src/main/resources/sponge.realtime.mixin.json
@@ -1,7 +1,7 @@
 {
   "required": true,
   "package": "org.spongepowered.common.mixin.realtime",
-  "compatibilityLevel": "JAVA_16",
+  "compatibilityLevel": "JAVA_21",
   "mixins": [
     "accessor.AbstractFurnaceBlockEntityAccessor",
     "accessor.BrewingStandBlockEntityAccessor",
diff --git a/src/main/resources/tweak.mixin.json b/src/main/resources/tweak.mixin.json
index c79cd1e91..5753b9809 100644
--- a/src/main/resources/tweak.mixin.json
+++ b/src/main/resources/tweak.mixin.json
@@ -1,7 +1,7 @@
 {
   "required": true,
   "package": "one.oktw.galaxy.mixin.tweak",
-  "compatibilityLevel": "JAVA_16",
+  "compatibilityLevel": "JAVA_21",
   "mixins": [
     "MixinAsyncChunk_ChunkPosDistanceLevelPropagator",
     "MixinAsyncChunk_RegionBasedStorage",