diff --git a/pkgs/applications/networking/mailreaders/thunderbird/default.nix b/pkgs/applications/networking/mailreaders/thunderbird/default.nix
index 27b9d335e27c..cdb52ec8d23f 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/default.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "mirror://mozilla/thunderbird/releases/${verName}/source/thunderbird-${verName}.source.tar.xz";
-    sha256 = "1wbkj8a0p62mcbxlq8yyzrx51xi65qm8f2ccqiv5pb6qd51b5d0v";
+    sha256 = "0rynfyxgpvfla17zniaq84slc02kg848qawkjmdbnv74y6bkhs8m";
   };
 
   buildInputs = # from firefox30Pkgs.xulrunner, without gstreamer and libvpx