diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index 766c9b35e..bd60c4320 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "0970fc5da7b6155e589db5a01a574a135559265d",
-  "syncedAt": "2026-04-25T05:32:51.117Z"
+  "sha": "c2a2a481b2e15a27c8c0d290b17150d1076d78ae",
+  "syncedAt": "2026-04-25T05:37:21.861Z"
 }
diff --git a/docs/channels/whatsapp.md b/docs/channels/whatsapp.md
index 90391d736..6649d68f8 100644
--- a/docs/channels/whatsapp.md
+++ b/docs/channels/whatsapp.md
@@ -361,6 +361,7 @@ When the linked self number is also present in `allowFrom`, WhatsApp self-chat s
 
   <Accordion title="Outbound media behavior">
     - supports image, video, audio (PTT voice-note), and document payloads
+    - reply payloads preserve `audioAsVoice`; WhatsApp sends audio media as Baileys PTT voice notes
     - `audio/ogg` is rewritten to `audio/ogg; codecs=opus` for voice-note compatibility
     - animated GIF playback is supported via `gifPlayback: true` on video sends
     - captions are applied to the first media item when sending multi-media reply payloads