diff --git a/docs/lifespan.rst b/docs/lifespan.rst
index 0de7090..c53341c 100644
--- a/docs/lifespan.rst
+++ b/docs/lifespan.rst
@@ -18,7 +18,7 @@ instance.
             from connexion import AsyncApp, ConnexionMiddleware, request
 
             @contextlib.asynccontextmanager
-            def lifespan_handler(app: ConnexionMiddleware) -> typing.AsyncIterator:
+            async def lifespan_handler(app: ConnexionMiddleware) -> typing.AsyncIterator:
                 """Called at startup and shutdown, can yield state which will be available on the
                  request."""
                 client = Client()
@@ -44,7 +44,7 @@ instance.
             from connexion import FlaskApp, ConnexionMiddleware, request
 
             @contextlib.asynccontextmanager
-            def lifespan_handler(app: ConnexionMiddleware) -> typing.AsyncIterator:
+            async def lifespan_handler(app: ConnexionMiddleware) -> typing.AsyncIterator:
                 """Called at startup and shutdown, can yield state which will be available on the
                  request."""
                 client = Client()
@@ -71,7 +71,7 @@ instance.
             from connexion import ConnexionMiddleware, request
 
             @contextlib.asynccontextmanager
-            def lifespan_handler(app: ConnexionMiddleware) -> typing.AsyncIterator:
+            async def lifespan_handler(app: ConnexionMiddleware) -> typing.AsyncIterator:
                 """Called at startup and shutdown, can yield state which will be available on the
                  request."""
                 client = Client()
@@ -106,4 +106,4 @@ context manager.
 
 For more information, please refer to the `Starlette documentation`_.
 
-.. _Starlette documentation: https://www.starlette.io/lifespan/
\ No newline at end of file
+.. _Starlette documentation: https://www.starlette.io/lifespan/