diff --git a/biometrics/common/aidl/Android.bp b/biometrics/common/aidl/Android.bp
index 8502a82..246bcf2 100644
--- a/biometrics/common/aidl/Android.bp
+++ b/biometrics/common/aidl/Android.bp
@@ -13,7 +13,7 @@
     srcs: [
         "android/hardware/biometrics/common/*.aidl",
     ],
-    frozen: false,
+    frozen: true,
     stability: "vintf",
     backend: {
         java: {
@@ -36,6 +36,10 @@
             version: "3",
             imports: [],
         },
+        {
+            version: "4",
+            imports: [],
+        },
 
     ],
 }