diff --git a/pkgs/development/python-modules/pymelcloud/default.nix b/pkgs/development/python-modules/pymelcloud/default.nix
index 079c7e31f140..ad4e529c528a 100644
--- a/pkgs/development/python-modules/pymelcloud/default.nix
+++ b/pkgs/development/python-modules/pymelcloud/default.nix
@@ -26,6 +26,8 @@ buildPythonPackage rec {
     aiohttp
   ];
 
+  doCheck = pythonOlder "3.11"; # asynctest is unsupported on python3.11
+
   nativeCheckInputs = [
     asynctest
     pytest-asyncio