diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index ef8dc5c12..26fc9e655 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "bd32b1a906f37ce6c8abd130c8434287f1208de5",
-  "syncedAt": "2026-04-25T08:27:38.964Z"
+  "sha": "b0c55eb65948b633f61fe04e04c91d7da02cf4f8",
+  "syncedAt": "2026-04-25T08:27:44.894Z"
 }
diff --git a/docs/channels/feishu.md b/docs/channels/feishu.md
index 50571935a..c839818a4 100644
--- a/docs/channels/feishu.md
+++ b/docs/channels/feishu.md
@@ -424,6 +424,14 @@ Full configuration: [Gateway configuration](/gateway/configuration)
 - ✅ Interactive cards (including streaming updates)
 - ⚠️ Rich text (post-style formatting; doesn't support full Feishu/Lark authoring capabilities)
 
+Native Feishu/Lark audio bubbles use the Feishu `audio` message type and require
+Ogg/Opus upload media (`file_type: "opus"`). Existing `.opus` and `.ogg` media
+is sent directly as native audio. MP3/WAV/M4A and other likely audio formats are
+transcoded to 48kHz Ogg/Opus with `ffmpeg` only when the reply requests voice
+delivery (`audioAsVoice` / message tool `asVoice`, including TTS voice-note
+replies). Ordinary MP3 attachments stay regular files. If `ffmpeg` is missing or
+conversion fails, OpenClaw falls back to a file attachment and logs the reason.
+
 ### Threads and replies
 
 - ✅ Inline replies
diff --git a/docs/tools/tts.md b/docs/tools/tts.md
index 16780a098..2d7c6cb9c 100644
--- a/docs/tools/tts.md
+++ b/docs/tools/tts.md
@@ -489,8 +489,12 @@ These override `messages.tts.*` for that host.
 
 ## Output formats (fixed)
 
-- **Feishu / Matrix / Telegram / WhatsApp**: Opus voice message (`opus_48000_64` from ElevenLabs, `opus` from OpenAI).
+- **Feishu / Matrix / Telegram / WhatsApp**: voice-note replies prefer Opus (`opus_48000_64` from ElevenLabs, `opus` from OpenAI).
   - 48kHz / 64kbps is a good voice message tradeoff.
+- **Feishu**: when a voice-note reply is produced as MP3/WAV/M4A or another
+  likely audio file, the Feishu plugin transcodes it to 48kHz Ogg/Opus with
+  `ffmpeg` before sending the native `audio` bubble. If conversion fails, Feishu
+  receives the original file as an attachment.
 - **Other channels**: MP3 (`mp3_44100_128` from ElevenLabs, `mp3` from OpenAI).
   - 44.1kHz / 128kbps is the default balance for speech clarity.
 - **MiniMax**: MP3 (`speech-2.8-hd` model, 32kHz sample rate) for normal audio attachments. For voice-note targets such as Feishu and Telegram, OpenClaw transcodes the MiniMax MP3 to 48kHz Opus with `ffmpeg` before delivery.
@@ -572,6 +576,8 @@ Notes:
 The `tts` tool converts text to speech and returns an audio attachment for
 reply delivery. When the channel is Feishu, Matrix, Telegram, or WhatsApp,
 the audio is delivered as a voice message rather than a file attachment.
+Feishu can transcode non-Opus TTS output on this path when `ffmpeg` is
+available.
 It accepts optional `channel` and `timeoutMs` fields; `timeoutMs` is a
 per-call provider request timeout in milliseconds.