diff --git a/ansq/tcp/connection.py b/ansq/tcp/connection.py
index d13aff9..56a8387 100644
--- a/ansq/tcp/connection.py
+++ b/ansq/tcp/connection.py
@@ -559,7 +559,7 @@ async def subscribe(
 
         await self.rdy(messages_count)
 
-    async def messages(self) -> AsyncGenerator[NSQMessage, None]:
+    async def messages(self) -> AsyncGenerator[NSQMessage]:
         """Generator, yields messages"""
         assert self.is_subscribed, "You should subscribe to the topic first"
 
diff --git a/setup.cfg b/setup.cfg
index dc1d80c..32de045 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -25,7 +25,7 @@ packages = find:
 install_requires =
     aiohttp>=1.0.0
     attrs>=20.1
-python_requires = >=3.8
+python_requires = >=3.9
 include_package_data = True
 
 [options.packages.find]