diff --git a/pkgs/development/python-modules/pygtk/default.nix b/pkgs/development/python-modules/pygtk/default.nix
index 30a7d8e5ec1d..e8a66817013e 100644
--- a/pkgs/development/python-modules/pygtk/default.nix
+++ b/pkgs/development/python-modules/pygtk/default.nix
@@ -7,5 +7,7 @@ stdenv.mkDerivation {
     url = http://ftp.gnome.org/pub/GNOME/sources/pygtk/2.10/pygtk-2.10.4.tar.bz2;
     sha256 = "1xg8vng42lql29aa5ryva8icc8dwdc7h2y3yn96qjdgl394d96mb";
   };
-  buildInputs = [python pkgconfig glib gtk pygobject pycairo];
+  buildInputs = [python pkgconfig glib gtk pycairo];
+
+  propagatedBuildInputs = [pygobject];
 }