diff --git a/actionpack/CHANGELOG b/actionpack/CHANGELOG
index 2231d6db4ba656a0cac2225df61de971fdd7c29f..0ec42cc6de80b789abb001329fcc6d131e20d171 100644
--- a/actionpack/CHANGELOG
+++ b/actionpack/CHANGELOG
@@ -2,6 +2,9 @@
 
 * Renames csrf_meta_tag -> csrf_meta_tags, and aliases csrf_meta_tag for backwards compatibility. [fxn]
 
+* Add Rack::Cache to the default stack. Create a Rails store that delegates to the Rails cache, so by default, whatever caching layer you are using will be used
+  for HTTP caching. Note that Rack::Cache will be used if you use #expires_in, #fresh_when or #stale with :public => true. Otherwise, the caching rules will apply
+  to the browser only.
 
 *Rails 3.0.0 (August 29, 2010)*
 
diff --git a/railties/CHANGELOG b/railties/CHANGELOG
index fb8701fb78baeddd63413831b299c762225f3f8d..d2a4add37561069e68098937337ff4019e7c422b 100644
--- a/railties/CHANGELOG
+++ b/railties/CHANGELOG
@@ -1,5 +1,7 @@
 *Rails 3.1.0 (unreleased)*
 
+* Added Rack::Cache to the default middleware stack
+
 * Engine is now rack application [Piotr Sarnacki]
 
 * Added middleware stack to Engine [Piotr Sarnacki]