diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 89ec97dbc9..79d4314d87 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -13,6 +13,11 @@
   ([#6335](https://github.com/google/ExoPlayer/issues/6335)).
 * Add `HttpDataSource.getResponseCode` to provide the status code associated
   with the most recent HTTP response.
+* Upgrade LibRtmp-Client-for-Android to fix RTMP playback issues
+  ([#4200](https://github.com/google/ExoPlayer/issues/4200),
+  [#4249](https://github.com/google/ExoPlayer/issues/4249),
+  [#4319](https://github.com/google/ExoPlayer/issues/4319),
+  [#4337](https://github.com/google/ExoPlayer/issues/4337)).
 
 ### 2.10.4 ###