diff --git a/pkgs/development/python-modules/pyunpack/default.nix b/pkgs/development/python-modules/pyunpack/default.nix
index 81319bbfb33b..3c0a2f30afad 100644
--- a/pkgs/development/python-modules/pyunpack/default.nix
+++ b/pkgs/development/python-modules/pyunpack/default.nix
@@ -45,6 +45,11 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "pyunpack" ];
 
+  disabledTests = [
+    # pinning test of `--help` sensitive to python version
+    "test_help"
+  ];
+
   disabledTestPaths = [
     # unfree
     "tests/test_rar.py"