diff --git a/c3-cloudfront-clear-cache.php b/c3-cloudfront-clear-cache.php
index 4e26949f..94c4b7b3 100644
--- a/c3-cloudfront-clear-cache.php
+++ b/c3-cloudfront-clear-cache.php
@@ -1,7 +1,7 @@
 <?php
 /*
  * Plugin Name: C3 Cloudfront Cache Controller
- * Version: 4.3.0
+ * Version: 4.3.1
  * Plugin URI:https://github.com/megumiteam/C3-Cloudfront-Clear-Cache
  * Description:This is simple plugin that clear all cloudfront cache if you publish posts.
  * Author: hideokamoto
diff --git a/readme.txt b/readme.txt
index 0d94cb5e..68eeef23 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,8 +3,8 @@ Contributors: amimotoami,hideokamoto,megumithemes,wokamoto,miyauchi,hnle
 Donate link: http://wp-kyoto.net/
 Tags: AWS,CDN,CloudFront
 Requires at least: 4.3.1
-Tested up to: 4.6.1
-Stable tag: 4.3.0
+Tested up to: 4.8.2
+Stable tag: 4.3.1
 License: GPLv3 or later
 License URI: http://www.gnu.org/licenses/gpl-3.0.html
 
@@ -32,37 +32,42 @@ This plugin send following page url to CloudFront Invalidation API.
 
 If post published,this plugin post invalidation request to CloudFront.
 
-== Changelog ==
-
-= 4.3.0 =
-* Schedule cron event if you published many post at the same time
-
-= 4.2.1 =
-* Fix 'c3_credential' filter position
-
-= 4.2.0 =
-* Support AMIMOT Dashboard
-
-= 4.1.0 =
-* Show Invalidation Logs
-
-= 4.0.3 =
-* Auto Deploy by Travis
-
-= 4.0.2 =
-* Add WP-CLI param check ( wp c3 flush)
-* change transient_key
-
-= 4.0.1 =
-* Bug fix ( conflict Nephila Clavata )
-
-= 4.0.0 =
-* Support AWS SDK Version3
-* Remove action hook -> 'c3_add_setting_before'
-  use 'c3_after_title' filter hook instead.
-* Remove action hook -> 'c3_add_setting_after'
-  use 'c3_after_auth_form' filter hook instead.
-
+== Changelog ==
+
+= 4.3.1 =
+* Fix cron interval
+* add filters `'c3_invalidation_interval`, `c3_invalidation_cron_interval`, `c3_invalidation_item_limits`.
+* update default invalidation interval & items.
+
+= 4.3.0 =
+* Schedule cron event if you published many post at the same time
+
+= 4.2.1 =
+* Fix 'c3_credential' filter position
+
+= 4.2.0 =
+* Support AMIMOT Dashboard
+
+= 4.1.0 =
+* Show Invalidation Logs
+
+= 4.0.3 =
+* Auto Deploy by Travis
+
+= 4.0.2 =
+* Add WP-CLI param check ( wp c3 flush)
+* change transient_key
+
+= 4.0.1 =
+* Bug fix ( conflict Nephila Clavata )
+
+= 4.0.0 =
+* Support AWS SDK Version3
+* Remove action hook -> 'c3_add_setting_before'
+  use 'c3_after_title' filter hook instead.
+* Remove action hook -> 'c3_add_setting_after'
+  use 'c3_after_auth_form' filter hook instead.
+
 = 3.0.0 =
 * Include CF Preview Fix plugin
 * Rename
@@ -115,5 +120,7 @@ If post published,this plugin post invalidation request to CloudFront.
 
 == Upgrade Notice ==
 
-= 4.3.0 =
-* Schedule cron event if you published many post at the same time
+= 4.3.1 =
+* Fix cron interval
+* add filters `'c3_invalidation_interval`, `c3_invalidation_cron_interval`, `c3_invalidation_item_limits`.
+* update default invalidation interval & items.