diff --git a/media/libmediatranscoding/Android.bp b/media/libmediatranscoding/Android.bp
index 7468426..f948bd8 100644
--- a/media/libmediatranscoding/Android.bp
+++ b/media/libmediatranscoding/Android.bp
@@ -17,6 +17,7 @@
 // AIDL interfaces of MediaTranscoding.
 aidl_interface {
     name: "mediatranscoding_aidl_interface",
+    unstable: true,
     local_include_dir: "aidl",
     srcs: [
         "aidl/android/media/IMediaTranscodingService.aidl",