diff --git a/pkgs/development/libraries/webkit/src-for-default.nix b/pkgs/development/libraries/webkit/src-for-default.nix
index 26c5303fea17..632c6fbbee29 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="r50540";
-   name="webkit-r50540";
-   hash="07gjazgkjnvigkl7pa9r8hzw74dkx9m7m7q2xfnayp9lv79r2wp4";
-   url="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r50540.tar.bz2";
-   advertisedUrl="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r50540.tar.bz2";
+   version="r51303";
+   name="webkit-r51303";
+   hash="0khlc38gzb65xr0fsap60cz65rd6d7f7v31hhj4x1bxjrm3pj48w";
+   url="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r51303.tar.bz2";
+   advertisedUrl="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r51303.tar.bz2";
   
   
 }