diff --git a/pkgs/development/python-modules/pytest-mock/default.nix b/pkgs/development/python-modules/pytest-mock/default.nix
index 822910f4083..c21175bf338 100644
--- a/pkgs/development/python-modules/pytest-mock/default.nix
+++ b/pkgs/development/python-modules/pytest-mock/default.nix
@@ -27,8 +27,9 @@ buildPythonPackage rec {
     pytest
   ];
 
+  # ignore test which only works with pytest5 output structure
   checkPhase = ''
-    pytest
+    pytest -k 'not detailed_introspection_async'
   '';
 
   meta = with lib; {