diff --git a/apex/Android.bp b/apex/Android.bp
index eee26ae..449d29c 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -21,7 +21,9 @@
         "libamrextractor",
         "libflacextractor",
         "libmidiextractor",
+        "libmkvextractor",
         "libmp3extractor",
+        "libmp4extractor",
         "libwavextractor",
     ],
     key: "com.android.media.key",