diff --git a/api.txt b/api.txt
index ca98427537..66a509138d 100644
--- a/api.txt
+++ b/api.txt
@@ -1393,7 +1393,6 @@ package androidx.media3.exoplayer.ima {
 
   public static final class ImaServerSideAdInsertionMediaSource.AdsLoader {
     method public androidx.media3.exoplayer.ima.ImaServerSideAdInsertionMediaSource.AdsLoader.State release();
-    method public void replaceAdTagParameters(java.util.Map<java.lang.String,java.lang.String>);
     method public void setPlayer(androidx.media3.common.Player);
   }
 
diff --git a/libraries/exoplayer_ima/src/main/java/androidx/media3/exoplayer/ima/ImaServerSideAdInsertionMediaSource.java b/libraries/exoplayer_ima/src/main/java/androidx/media3/exoplayer/ima/ImaServerSideAdInsertionMediaSource.java
index cefbc70084..04455561b4 100644
--- a/libraries/exoplayer_ima/src/main/java/androidx/media3/exoplayer/ima/ImaServerSideAdInsertionMediaSource.java
+++ b/libraries/exoplayer_ima/src/main/java/androidx/media3/exoplayer/ima/ImaServerSideAdInsertionMediaSource.java
@@ -477,6 +477,7 @@ public final class ImaServerSideAdInsertionMediaSource extends CompositeMediaSou
      *
      * @see StreamManager#replaceAdTagParameters(Map<String, String>)
      */
+    @UnstableApi
     public void replaceAdTagParameters(Map<String, String> adTagParameters) {
       if (player == null) {
         return;