diff --git a/pkgs/development/python-modules/kubernetes/default.nix b/pkgs/development/python-modules/kubernetes/default.nix
index 2ed3307f26a3..7818871db1b7 100644
--- a/pkgs/development/python-modules/kubernetes/default.nix
+++ b/pkgs/development/python-modules/kubernetes/default.nix
@@ -33,6 +33,11 @@ buildPythonPackage rec {
     hash = "sha256-NKrxv5a5gkgpNG7yViTKYBYnU249taWl6fkPJa7/Rzo=";
   };
 
+  postPatch = ''
+    substituteInPlace kubernetes/base/config/kube_config_test.py \
+      --replace-fail "assertEquals" "assertEqual"
+  '';
+
   pythonRelaxDeps = [
     "urllib3"
   ];