diff --git a/pkgs/development/python-modules/pyzerproc/default.nix b/pkgs/development/python-modules/pyzerproc/default.nix
index a453014fe8be..b5eb54916717 100644
--- a/pkgs/development/python-modules/pyzerproc/default.nix
+++ b/pkgs/development/python-modules/pyzerproc/default.nix
@@ -5,6 +5,7 @@
 , fetchFromGitHub
 , pytest-asyncio
 , pytest-mock
+, pythonAtLeast
 , pytestCheckHook
 , pythonOlder
 }:
@@ -38,6 +39,11 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  disabledTestPaths = lib.optionals (pythonAtLeast "3.11") [
+    # unittest.mock.InvalidSpecError: Cannot spec a Mock object.
+    "tests/test_light.py"
+  ];
+
   pythonImportsCheck = [
     "pyzerproc"
   ];