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diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 475c237009..8b72529aff 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,5 +1,25 @@
 ## Rails 4.0.0 (unreleased) ##
 
+*   Explain only normal CRUD sql (select / update / insert / delete).
+    Fix problem that explains unexplainable sql. Closes #7544 #6458.
+
+    *kennyj*
+
+*   Fix `find_in_batches` when primary_key is set other than id.
+    You can now use this method with the primary key which is not integer-based.
+
+    Example:
+
+        class Post < ActiveRecord::Base
+          self.primary_key = :title
+        end
+
+        Post.find_in_batches(:start => 'My First Post') do |batch|
+          batch.each { |post| post.author.greeting }
+        end
+
+    *Toshiyuki Kawanishi*
+
 *   You can now override the generated accessor methods for stored attributes
     and reuse the original behavior with `read_store_attribute` and `write_store_attribute`,
     which are counterparts to `read_attribute` and `write_attribute`.