diff --git a/History.rdoc b/History.rdoc
index 3c399eed3e..4c91a91fa7 100644
--- a/History.rdoc
+++ b/History.rdoc
@@ -1,4 +1,4 @@
-=== 4.0.0.preview2
+=== 4.0.0.preview2 / 2012-12-01
 
 As a preview release, please file bugs for any problems you have with rdoc at
 https://github.com/rdoc/rdoc/issues
diff --git a/lib/rdoc.rb b/lib/rdoc.rb
index 23b63bb8e5..32a3658e41 100644
--- a/lib/rdoc.rb
+++ b/lib/rdoc.rb
@@ -64,7 +64,7 @@ class Error < RuntimeError; end
   ##
   # RDoc version you are using
 
-  VERSION = '4.0.0.preview2'
+  VERSION = '4.0.0'
 
   ##
   # Method visibilities