diff --git a/examples/completions_streaming.py b/examples/completions_streaming.py
index 041a8c2..88f2b9e 100644
--- a/examples/completions_streaming.py
+++ b/examples/completions_streaming.py
@@ -13,7 +13,7 @@
 from writerai import AsyncClient, BadRequestError
 
 
-async def main():
+async def main() -> None:
     client = AsyncClient()
 
     print("Supported models:")