diff --git "a/src/api/routes/channels/\043channel_id/messages/index.ts" "b/src/api/routes/channels/\043channel_id/messages/index.ts"
index 3e0a056..2e1e3a2 100644
--- "a/src/api/routes/channels/\043channel_id/messages/index.ts"
+++ "b/src/api/routes/channels/\043channel_id/messages/index.ts"
@@ -430,7 +430,7 @@
 			console.error("[Message] post-message handler failed", e),
 		);
 
-		return res.json(message);
+		return res.json(message.withSignedAttachments(req));
 	},
 );