diff --git a/ir/aidl/Android.bp b/ir/aidl/Android.bp
index 25f6c8f..c561c52 100644
--- a/ir/aidl/Android.bp
+++ b/ir/aidl/Android.bp
@@ -26,6 +26,7 @@
     vendor_available: true,
     srcs: ["android/hardware/ir/*.aidl"],
     stability: "vintf",
+    frozen: true,
     backend: {
         cpp: {
             enabled: false,