diff --git a/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/ForwardingRenderer.java b/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/ForwardingRenderer.java
index 8996384c43..3c1b36976c 100644
--- a/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/ForwardingRenderer.java
+++ b/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/ForwardingRenderer.java
@@ -5,12 +5,14 @@ import androidx.media3.common.C;
 import androidx.media3.common.Format;
 import androidx.media3.common.Timeline;
 import androidx.media3.common.util.Clock;
+import androidx.media3.common.util.UnstableApi;
 import androidx.media3.exoplayer.analytics.PlayerId;
 import androidx.media3.exoplayer.source.MediaSource;
 import androidx.media3.exoplayer.source.SampleStream;
 import java.io.IOException;
 
 /** An overridable {@link ForwardingRenderer} implementation forwarding all methods to another renderer. */
+@UnstableApi
 public class ForwardingRenderer implements Renderer {
 
   private final Renderer renderer;