diff --git a/pkgs/applications/networking/mailreaders/thunderbird/3.x.nix b/pkgs/applications/networking/mailreaders/thunderbird/3.x.nix
index 0242f22f396..12cbeb1328e 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/3.x.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/3.x.nix
@@ -11,14 +11,14 @@
     
 }:
 
-let version = "3.1.6"; in
+let version = "3.1.7"; in
 
 stdenv.mkDerivation {
   name = "thunderbird-${version}";
 
   src = fetchurl {
     url = "http://releases.mozilla.org/pub/mozilla.org/thunderbird/releases/${version}/source/thunderbird-${version}.source.tar.bz2";
-    sha1 = "d9c089c64cc7a784e128d9c594ef649a35babe30";
+    sha1 = "c2d6cdedfe399c1ab41c00045e4fce835cc0b36f";
   };
 
   buildInputs =