diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6bac8031e..f77fa9f29 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -42,6 +42,7 @@ Docs: https://docs.clawd.bot
 - Messages: refresh live directory cache results when resolving targets.
 - Messages: mirror delivered outbound text/media into session transcripts. (#1031) — thanks @TSavo.
 - Messages: avoid redundant sender envelopes for iMessage + Signal group chats. (#1080) — thanks @tyler6204.
+- Media: normalize Deepgram audio upload bytes for fetch compatibility.
 - Cron: isolated cron jobs now start a fresh session id on every run to prevent context buildup.
 - Docs: add `/help` hub, Node/npm PATH guide, and expand directory CLI docs.
 - Config: support env var substitution in config values. (#1044) — thanks @sebslight.
diff --git a/src/media-understanding/providers/deepgram/audio.ts b/src/media-understanding/providers/deepgram/audio.ts
index a35d49e7e..1bc9bc782 100644
--- a/src/media-understanding/providers/deepgram/audio.ts
+++ b/src/media-understanding/providers/deepgram/audio.ts
@@ -44,12 +44,13 @@ export async function transcribeDeepgramAudio(
     headers.set("content-type", params.mime ?? "application/octet-stream");
   }
 
+  const body = new Uint8Array(params.buffer);
   const res = await fetchWithTimeout(
     url.toString(),
     {
       method: "POST",
       headers,
-      body: params.buffer,
+      body,
     },
     params.timeoutMs,
     fetchFn,