diff --git a/pkgs/applications/networking/browsers/firefox/3.6.nix b/pkgs/applications/networking/browsers/firefox/3.6.nix
index 1edf9f260a7f..5a25e80a169d 100644
--- a/pkgs/applications/networking/browsers/firefox/3.6.nix
+++ b/pkgs/applications/networking/browsers/firefox/3.6.nix
@@ -12,14 +12,14 @@
 
 rec {
 
-  firefoxVersion = "3.6.11";
+  firefoxVersion = "3.6.12";
   
-  xulVersion = "1.9.2.11"; # this attribute is used by other packages
+  xulVersion = "1.9.2.12"; # this attribute is used by other packages
 
   
   src = fetchurl {
     url = "http://releases.mozilla.org/pub/mozilla.org/firefox/releases/${firefoxVersion}/source/firefox-${firefoxVersion}.source.tar.bz2";
-    sha1 = "d5443a07243a771fb4c69c08cd6a0f5320a888c4";
+    sha1 = "1cc3885687dd5ad21167d9d45f76eb1458f46bdd";
   };
 
 
diff --git a/pkgs/applications/networking/mailreaders/thunderbird/3.x.nix b/pkgs/applications/networking/mailreaders/thunderbird/3.x.nix
index 863f5a4aab94..0242f22f396b 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/3.x.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/3.x.nix
@@ -11,19 +11,20 @@
     
 }:
 
-let version = "3.1.2"; in
+let version = "3.1.6"; 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 = "645cb75a0e0b0ea38e25d54f970052bc02e7afe5";
+    sha1 = "d9c089c64cc7a784e128d9c594ef649a35babe30";
   };
 
   buildInputs =
     [ pkgconfig perl python zip bzip2 gtk dbus_glib alsaLib libIDL nspr libnotify
-      libnotify cairo pixman fontconfig ];
+      libnotify cairo pixman fontconfig
+    ];
 
   NIX_LDFLAGS = "-lpixman-1";