diff --git a/pkgs/applications/networking/browsers/chromium/default.nix b/pkgs/applications/networking/browsers/chromium/default.nix
index 682de9090676..60b6ff674cce 100644
--- a/pkgs/applications/networking/browsers/chromium/default.nix
+++ b/pkgs/applications/networking/browsers/chromium/default.nix
@@ -130,7 +130,7 @@ in stdenv.mkDerivation rec {
   '' + ''
     sed -i -e 's|/usr/bin/gcc|gcc|' \
       third_party/WebKit/Source/${if post27
-                                  then "core/core.gyp/core.gyp"
+                                  then "core/core.gypi"
                                   else "WebCore/WebCore.gyp/WebCore.gyp"}
   '';
 
diff --git a/pkgs/applications/networking/browsers/chromium/sources.nix b/pkgs/applications/networking/browsers/chromium/sources.nix
index 0e041ee95187..3f0cb0e3f83f 100644
--- a/pkgs/applications/networking/browsers/chromium/sources.nix
+++ b/pkgs/applications/networking/browsers/chromium/sources.nix
@@ -1,14 +1,14 @@
 # This file is autogenerated from update.sh in the same directory.
 {
   dev = {
-    version = "28.0.1485.0";
-    url = "http://commondatastorage.googleapis.com/chromium-browser-official/chromium-28.0.1485.0.tar.xz";
-    sha256 = "04whky5bwsj909cc1ycwrc91d04iynwncwh21cbbbvg93jsj2pq9";
+    version = "28.0.1500.5";
+    url = "http://commondatastorage.googleapis.com/chromium-browser-official/chromium-28.0.1500.5.tar.xz";
+    sha256 = "1jpjmqag875bpy4rwvr362nzx0r8ffcrisil9ci2ar6ayjd4lfhd";
   };
   beta = {
-    version = "27.0.1453.65";
-    url = "http://commondatastorage.googleapis.com/chromium-browser-official/chromium-27.0.1453.65.tar.xz";
-    sha256 = "1flv9870p0bqglnbm4gfzbxzcvz30k2chxgnlbqgpfk5c4qq9mpb";
+    version = "27.0.1453.81";
+    url = "http://commondatastorage.googleapis.com/chromium-browser-official/chromium-27.0.1453.81.tar.xz";
+    sha256 = "1g4gsrcdrp06hqr25fd9l4snjhibp5pi7pc3wv11fp8gd04cpv9w";
   };
   stable = {
     version = "26.0.1410.63";