diff --git a/CHANGELOG.rdoc b/CHANGELOG.rdoc
index 36a27e9b..36fda18d 100644
--- a/CHANGELOG.rdoc
+++ b/CHANGELOG.rdoc
@@ -7,6 +7,7 @@
   * Do not load hooks or strategies if they are not used
 
 * enhancements
+  * Allow option :null => true in authenticable migration
   * Customizable time frame for rememberable with :remember_for config
   * Customizable time frame for confirmable with :confirm_in config