diff --git a/pkgs/development/libraries/webkit/src-for-default.nix b/pkgs/development/libraries/webkit/src-for-default.nix
index dc9371cbe68..20fa0cbe4cd 100644
--- a/pkgs/development/libraries/webkit/src-for-default.nix
+++ b/pkgs/development/libraries/webkit/src-for-default.nix
@@ -1,9 +1,9 @@
 rec {
-   version="r65398";
-   name="webkit-r65398";
-   hash="0y9pfhff1nyc818li8lqdkq906yi1r9n9zzmgymx8zpqxg8kcmk8";
-   url="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r65398.tar.bz2";
-   advertisedUrl="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r65398.tar.bz2";
+   version="r66356";
+   name="webkit-r66356";
+   hash="046xbmzxxhigsc2jwnkvgfvf11n54hi92i8nskcznwbbs1ra282i";
+   url="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r66356.tar.bz2";
+   advertisedUrl="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r66356.tar.bz2";
   
   
 }