diff --git a/stubs/psycopg2/psycopg2/pool.pyi b/stubs/psycopg2/psycopg2/pool.pyi
index c2a4dc47ab5a..a883d74f0ed8 100644
--- a/stubs/psycopg2/psycopg2/pool.pyi
+++ b/stubs/psycopg2/psycopg2/pool.pyi
@@ -2,6 +2,7 @@ from _typeshed import ConvertibleToInt
 from collections.abc import Hashable
 
 import psycopg2
+from psycopg2.extensions import connection
 
 class PoolError(psycopg2.Error): ...
 
@@ -12,8 +13,8 @@ class AbstractConnectionPool:
     def __init__(self, minconn: ConvertibleToInt, maxconn: ConvertibleToInt, *args, **kwargs) -> None: ...
     # getconn, putconn and closeall are officially documented as methods of the
     # abstract base class, but in reality, they only exist on the children classes
-    def getconn(self, key: Hashable | None = None): ...
-    def putconn(self, conn, key: Hashable | None = None, close: bool = False) -> None: ...
+    def getconn(self, key: Hashable | None = None) -> connection: ...
+    def putconn(self, conn: connection, key: Hashable | None = None, close: bool = False) -> None: ...
     def closeall(self) -> None: ...
 
 class SimpleConnectionPool(AbstractConnectionPool): ...
@@ -21,4 +22,4 @@ class SimpleConnectionPool(AbstractConnectionPool): ...
 class ThreadedConnectionPool(AbstractConnectionPool):
     # This subclass has a default value for conn which doesn't exist
     # in the SimpleConnectionPool class, nor in the documentation
-    def putconn(self, conn=None, key: Hashable | None = None, close: bool = False) -> None: ...
+    def putconn(self, conn: connection | None = None, key: Hashable | None = None, close: bool = False) -> None: ...