diff --git a/pkgs/development/interpreters/python/3.1/default.nix b/pkgs/development/interpreters/python/3.1/default.nix
index 9b1831ba881e..72e7a5030bcf 100644
--- a/pkgs/development/interpreters/python/3.1/default.nix
+++ b/pkgs/development/interpreters/python/3.1/default.nix
@@ -91,6 +91,8 @@ stdenv.mkDerivation ( {
     libPrefix = "python${majorVersion}";
   };
 
+  enableParallelBuilding = true;
+
   meta = {
     homepage = "http://python.org";
     description = "a high-level dynamically-typed programming language";