diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 10a96907ac0..c6f9aa4af22 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8108,7 +8108,12 @@ rec {
     # pip depend on $HOME setting
     preConfigure = "export HOME=$TMPDIR";
 
-    buildInputs = [ pbr pip stevedore virtualenv virtualenv-clone ];
+    buildInputs = [ pbr pip stevedore virtualenv virtualenv-clone pkgs.which ];
+
+    patchPhase = ''
+      substituteInPlace "virtualenvwrapper.sh" --replace "which" "${pkgs.which}/bin/which"
+      substituteInPlace "virtualenvwrapper_lazy.sh" --replace "which" "${pkgs.which}/bin/which"
+    '';
 
     meta = {
       description = "Enhancements to virtualenv";