diff --git a/src/main/resources/mo-glass.mixins.json b/src/main/resources/mo-glass.mixins.json
index 38bbee2..0fac045 100644
--- a/src/main/resources/mo-glass.mixins.json
+++ b/src/main/resources/mo-glass.mixins.json
@@ -1,7 +1,7 @@
 {
   "required": true,
   "package": "net.wurstclient.glass.mixin",
-  "compatibilityLevel": "JAVA_17",
+  "compatibilityLevel": "JAVA_21",
   "mixins": [
     "ChunkLightProviderMixin",
     "GlassBlockMixin",