Changelog diff is:

diff --git Changes Changes
index 548783b..e4f103f 100644
--- Changes
+++ Changes
@@ -2,6 +2,22 @@ Revision history for Perl extension HTTP-Session2

 {{$NEXT}}

+1.00 2014-07-28T04:09:47Z
+
+    [INCOMPATIBLE CHANGE]
+    - I changed HMAC strategy on ServerSide mode.
+      Previous version uses
+
+        hmac_hex(data: $session_id, key: $secret)
+
+      New version is:
+
+        hmac_hex(data: $secret, key: $session)
+
+      This version is even secure. But, it's not a critical issue.
+
+      I think this change won't break your code.
+
 0.05 2014-03-18T18:52:37Z

     - use Cookie::Baker for generating cookie string for Plack response object.