diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 6ff387a76db..4fe590d52bf 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4280,6 +4280,8 @@ in modules // {
   dateutil_1_5 = buildPythonPackage (rec {
     name = "dateutil-1.5";
 
+    disabled = isPy3k;
+
     src = pkgs.fetchurl {
       url = "http://pypi.python.org/packages/source/p/python-dateutil/python-${name}.tar.gz";
       sha256 = "02dhw57jf5kjcp7ng1if7vdrbnlpb9yjmz7wygwwvf3gni4766bg";