diff --git a/pkgs/development/python-modules/m2crypto/default.nix b/pkgs/development/python-modules/m2crypto/default.nix
index 4cab8f47250..c0e91542d38 100644
--- a/pkgs/development/python-modules/m2crypto/default.nix
+++ b/pkgs/development/python-modules/m2crypto/default.nix
@@ -25,6 +25,7 @@ buildPythonPackage rec {
   ];
   patchFlags = "-p0";
 
+  nativeBuildInputs = [ swig2 ];
   buildInputs = [ swig2 openssl ];
 
   propagatedBuildInputs = [ typing ];