diff --git a/plugins/module_utils/_api/transport/unixconn.py b/plugins/module_utils/_api/transport/unixconn.py
index 58c6d728..8ff87ddb 100644
--- a/plugins/module_utils/_api/transport/unixconn.py
+++ b/plugins/module_utils/_api/transport/unixconn.py
@@ -117,7 +117,7 @@ class UnixHTTPAdapter(BaseHTTPAdapter):
 
         return pool
 
-    def request_url(self, request: PreparedRequest, proxies: Mapping[str, str]) -> str:
+    def request_url(self, request: PreparedRequest, proxies: Mapping[str, str] | None) -> str:
         # The select_proxy utility in requests errors out when the provided URL
         # does not have a hostname, like is the case when using a UNIX socket.
         # Since proxies are an irrelevant notion in the case of UNIX sockets