diff --git a/src/agents/realtime/openai_realtime.py b/src/agents/realtime/openai_realtime.py
index e8a4749e7..e03d56f4b 100644
--- a/src/agents/realtime/openai_realtime.py
+++ b/src/agents/realtime/openai_realtime.py
@@ -62,6 +62,7 @@
 
 from ..exceptions import UserError
 from ..logger import logger
+from ..version import __version__
 from .config import (
     RealtimeModelTracingConfig,
     RealtimeSessionModelSettings,
@@ -97,6 +98,8 @@
     RealtimeModelSendUserInput,
 )
 
+_USER_AGENT = f"Agents/Python {__version__}"
+
 DEFAULT_MODEL_SETTINGS: RealtimeSessionModelSettings = {
     "voice": "ash",
     "modalities": ["text", "audio"],
@@ -160,7 +163,9 @@ async def connect(self, options: RealtimeModelConfig) -> None:
             "Authorization": f"Bearer {api_key}",
             "OpenAI-Beta": "realtime=v1",
         }
-        self._websocket = await websockets.connect(url, additional_headers=headers)
+        self._websocket = await websockets.connect(
+            url, user_agent_header=_USER_AGENT, additional_headers=headers
+        )
         self._websocket_task = asyncio.create_task(self._listen_for_messages())
         await self._update_session_config(model_settings)