diff --git a/pkgs/development/libraries/webkitgtk/default.nix b/pkgs/development/libraries/webkitgtk/default.nix
index 158996f23df..08576c2ebc3 100644
--- a/pkgs/development/libraries/webkitgtk/default.nix
+++ b/pkgs/development/libraries/webkitgtk/default.nix
@@ -41,5 +41,5 @@ stdenv.mkDerivation rec {
     libsoup gtk3
   ];
 
-  enableParallelBuilding = true;
+  # enableParallelBuilding = true; # build problems on Hydra
 }