diff --git a/pkgs/development/libraries/gecode/default.nix b/pkgs/development/libraries/gecode/default.nix
index ee7b12de5027..5d683de404d9 100644
--- a/pkgs/development/libraries/gecode/default.nix
+++ b/pkgs/development/libraries/gecode/default.nix
@@ -2,13 +2,14 @@
 
 stdenv.mkDerivation rec {
   name = "gecode-${version}";
-  version = "4.4.0";
+  version = "5.0.0";
 
   src = fetchurl {
     url = "http://www.gecode.org/download/${name}.tar.gz";
-    sha256 = "0akqjzy6pd229mn0lhpdbyc4wbazhprkd5ijqs99z68bj3b9h0s3";
+    sha256 = "0yz7m4msp7g2jzsn216q74d9n7rv6qh8abcv0jdc1n7y2nhjzzzl";
   };
 
+  enableParallelBuilding = true;
   buildInputs = [ perl ];
 
   meta = with stdenv.lib; {