diff --git a/power/aidl/Android.bp b/power/aidl/Android.bp
index 70b1203..082572d 100644
--- a/power/aidl/Android.bp
+++ b/power/aidl/Android.bp
@@ -49,7 +49,12 @@
             version: "3",
             imports: [],
         },
+        {
+            version: "4",
+            imports: [],
+        },
 
     ],
+    frozen: true,
 
 }