diff --git a/.abf.yml b/.abf.yml
index ed8484f..53ce464 100644
--- a/.abf.yml
+++ b/.abf.yml
@@ -4,3 +4,4 @@ sources:
   firefox-19.0.source.tar.bz2: 816d64e8c9432349cd208fd181d210c54f985351
   firefox-19.0.2.source.tar.bz2: d108d356225379a86d69a4906c706289135f6342
   firefox-20.0.source.tar.bz2: 6d776c29da0be0d2a50abeb504d63b06b7861218
+  firefox-21.0.source.tar.bz2: e63b5488eaec1956947f59609d5839332ba7ffe1
diff --git a/firefox.spec b/firefox.spec
index 54c8c52..6e63520 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -7,7 +7,7 @@
 # This also means only STABLE upstream releases, NO betas.
 # This is a discussed topic. Please, do not flame it again.
 
-%define major 20.0
+%define major 21.0
 %define ff_epoch 0
 # (tpg) set version HERE !!!
 %define realver %{major}
@@ -31,7 +31,7 @@
 
 %define _use_syshunspell 0
 
-%define release  4
+%define release  1
 
 %define update_channel  release