diff --git a/pkgs/development/libraries/webkit/src-for-default.nix b/pkgs/development/libraries/webkit/src-for-default.nix
index 099f9c0a9653..3e1c2fb472ff 100644
--- a/pkgs/development/libraries/webkit/src-for-default.nix
+++ b/pkgs/development/libraries/webkit/src-for-default.nix
@@ -1,6 +1,6 @@
 rec {
-  advertisedUrl="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r47291.tar.bz2";
-  version = "r47291";
+  advertisedUrl="http://builds.nightly.webkit.org/files/trunk/src/WebKit-r47686.tar.bz2";
+  version = "r47686";
   url="http://builds.nightly.webkit.org/files/trunk/src/WebKit-${version}.tar.bz2";
-  hash = "14rggsgpsaxfph1967hbwlz814d8zyzl6xwzl7a25f6zf1nwcjdk";
+  hash = "1h1frvvp8hfv3q2drjnrpgadgin55p7nv8747kxxhdkj4gv9dzqg";
 }