diff --git a/pkgs/applications/networking/browsers/firefox/3.6.nix b/pkgs/applications/networking/browsers/firefox/3.6.nix
index 9c3c6c72cc6..47754d67f3c 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 = "3.6.16";
+  firefoxVersion = "3.6.21";
   
-  xulVersion = "1.9.2.16"; # this attribute is used by other packages
+  xulVersion = "1.9.2.21"; # 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 = "38124597440b7d60aa568adeef23659575841e92";
+    sha1 = "3c1f001ad22d93b48e191999f548b4382db3d36c";
   };
 
 
diff --git a/pkgs/applications/networking/browsers/firefox/6.0.nix b/pkgs/applications/networking/browsers/firefox/6.0.nix
index 15ddc4bffdd..85a467a641e 100644
--- a/pkgs/applications/networking/browsers/firefox/6.0.nix
+++ b/pkgs/applications/networking/browsers/firefox/6.0.nix
@@ -15,14 +15,14 @@ assert stdenv.gcc ? libc && stdenv.gcc.libc != null;
 
 rec {
 
-  firefoxVersion = "6.0";
+  firefoxVersion = "6.0.1";
   
-  xulVersion = "6.0"; # this attribute is used by other packages
+  xulVersion = "6.0.1"; # 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";
-    sha256 = "0ws96gc1mkmilgsikirhmqc6s7m0bcyh58820l08wd82r9abagyc";
+    sha256 = "08pklavbb6miaav07a8liw17k8nnh3i97plz8l9pdclan4aczb3i";
   };