diff --git a/pyrogram/session/auth.py b/pyrogram/session/auth.py
index d4083b21..f33ffba9 100644
--- a/pyrogram/session/auth.py
+++ b/pyrogram/session/auth.py
@@ -258,4 +258,4 @@ class Auth:
             else:
                 return auth_key
             finally:
-                self.connection.close()
+                await self.connection.close()