diff --git a/common/src/main/resources/modonomicon.mixins.json b/common/src/main/resources/modonomicon.mixins.json
index 6b44b3b17..9002d78e6 100644
--- a/common/src/main/resources/modonomicon.mixins.json
+++ b/common/src/main/resources/modonomicon.mixins.json
@@ -3,7 +3,7 @@
   "minVersion": "0.8",
   "package": "com.klikli_dev.modonomicon.mixin",
   "refmap": "${mod_id}.refmap.json",
-  "compatibilityLevel": "JAVA_17",
+  "compatibilityLevel": "JAVA_21",
   "mixins": [
   ],
   "client": [
diff --git a/fabric/src/main/resources/modonomicon.fabric.mixins.json b/fabric/src/main/resources/modonomicon.fabric.mixins.json
index 576cc024f..92cc3c6ef 100644
--- a/fabric/src/main/resources/modonomicon.fabric.mixins.json
+++ b/fabric/src/main/resources/modonomicon.fabric.mixins.json
@@ -3,7 +3,7 @@
   "minVersion": "0.8",
   "package": "com.klikli_dev.modonomicon.mixin",
   "refmap": "${mod_id}.refmap.json",
-  "compatibilityLevel": "JAVA_17",
+  "compatibilityLevel": "JAVA_21",
   "mixins": [
     "MixinPlayerAdvancements"
   ],