diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 1212b18921..9befa059e0 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -161,6 +161,9 @@
     *   Fix bug where non-primary playlists keep reloading for LL-HLS streams
         ([#1240](https://github.com/androidx/media/issues/1240)).
 *   DASH Extension:
+    *   Fix bug where re-preparing a multi-period live stream can throw an
+        `IndexOutOfBoundsException`
+        ([#1329](https://github.com/androidx/media/issues/1329)).
 *   Smooth Streaming Extension:
 *   RTSP Extension:
 *   Decoder Extensions (FFmpeg, VP9, AV1, MIDI, etc.):
diff --git a/libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/DashMediaSource.java b/libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/DashMediaSource.java
index f79a96f3a4..5e9a2087c7 100644
--- a/libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/DashMediaSource.java
+++ b/libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/DashMediaSource.java
@@ -604,7 +604,6 @@ public final class DashMediaSource extends BaseMediaSource {
     }
     manifestLoadStartTimestampMs = 0;
     manifestLoadEndTimestampMs = 0;
-    manifest = sideloadedManifest ? manifest : null;
     manifestUri = initialManifestUri;
     manifestFatalError = null;
     if (handler != null) {