diff --git a/pkgs/development/python-modules/bootstrapped-pip/default.nix b/pkgs/development/python-modules/bootstrapped-pip/default.nix
index b2846e3a13a1..812ff1a64cb6 100644
--- a/pkgs/development/python-modules/bootstrapped-pip/default.nix
+++ b/pkgs/development/python-modules/bootstrapped-pip/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     mkdir -p $out/bin
-  '';
+  '' + pip.postPatch;
 
   nativeBuildInputs = [ makeWrapper unzip ];
   buildInputs = [ python ];