diff --git a/progreso-client/src/main/resources/progreso.mixins.json b/progreso-client/src/main/resources/progreso.mixins.json
index d9c5e5a..6bc95bb 100644
--- a/progreso-client/src/main/resources/progreso.mixins.json
+++ b/progreso-client/src/main/resources/progreso.mixins.json
@@ -1,7 +1,7 @@
 {
   "required": true,
   "minVersion": "0.8",
-  "compatibilityLevel": "JAVA_17",
+  "compatibilityLevel": "JAVA_21",
   "package": "org.progreso.client.mixins",
   "injectors": {
     "defaultRequire": 1