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diff --git a/activemodel/CHANGELOG.md b/activemodel/CHANGELOG.md
index 1fe6dbd4d9..8c54ec3d45 100644
--- a/activemodel/CHANGELOG.md
+++ b/activemodel/CHANGELOG.md
@@ -1,5 +1,30 @@
 ## Rails 4.0.0 (unreleased) ##
 
+*   `has_secure_password` does not fail the confirmation validation
+    when assigning empty String to `password` and `password_confirmation`.
+
+    Example:
+
+        # given User has_secure_password.
+        @user.password = ""
+        @user.password_confirmation = ""
+        @user.valid?(:update) # used to be false
+
+*   `validates_confirmation_of` does not override writer methods for
+    the confirmation attribute if no reader is defined.
+
+    Example:
+
+        class Blog
+            def title=(new_title)
+              @title = new_title.downcase
+            end
+
+            # previously this would override the setter above.
+            validates_confirmation_of :title
+        end
+
+    *Yves Senn*
 
 ## Rails 4.0.0.beta1 (February 25, 2013) ##