diff --git a/src/pipecat/transports/network/fastapi_websocket.py b/src/pipecat/transports/network/fastapi_websocket.py
index 8da8396ff..9c4c170f2 100644
--- a/src/pipecat/transports/network/fastapi_websocket.py
+++ b/src/pipecat/transports/network/fastapi_websocket.py
@@ -23,6 +23,8 @@ from pipecat.frames.frames import (
     OutputAudioRawFrame,
     StartFrame,
     StartInterruptionFrame,
+    TransportMessageFrame,
+    TransportMessageUrgentFrame,
 )
 from pipecat.processors.frame_processor import FrameDirection
 from pipecat.serializers.base_serializer import FrameSerializer, FrameSerializerType
@@ -139,6 +141,9 @@ class FastAPIWebsocketOutputTransport(BaseOutputTransport):
             await self._write_frame(frame)
             self._next_send_time = 0
 
+    async def send_message(self, frame: TransportMessageFrame | TransportMessageUrgentFrame):
+        await self._write_frame(frame)
+
     async def write_raw_audio_frames(self, frames: bytes):
         if self._websocket.client_state != WebSocketState.CONNECTED:
             # Simulate audio playback with a sleep.