diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 9e4f4317eea0..d0f337de7f0b 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1108,9 +1108,6 @@ in {
   cement = callPackage ../development/python-modules/cement {};
 
   cgroup-utils = callPackage ../development/python-modules/cgroup-utils {};
-    postPatch = ''
-      substituteInPlace setup.py --replace "argparse" ""
-    '';
 
   chainer = callPackage ../development/python-modules/chainer {
     cudaSupport = pkgs.config.cudaSupport or false;