diff --git a/readme.txt b/readme.txt
index 02d1f6d..19189ed 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,7 +4,7 @@ Donate link: http://wpist.me/
 Tags: google maps, map, shortcode, address
 Requires at least: 3.6
 Tested up to: 4.3
-Stable tag: 2.8.0
+Stable tag: 2.8.1
 
 Easy way to embed google map(s).
 
@@ -124,6 +124,12 @@ You can use simple html as the tooltip content.
 
 == Changelog ==
 
+= 2.8.1 =
+
+* Update SimpleMap class.
+
+https://github.com/miya0001/simple-map/compare/2.8.0...2.8.1
+
 = 2.8.0 =
 
 * Display map in modal window.
diff --git a/simple-map.php b/simple-map.php
index 4fbd19b..a3c6602 100644
--- a/simple-map.php
+++ b/simple-map.php
@@ -4,7 +4,7 @@
 Author: Takayuki Miyauchi
 Plugin URI: https://github.com/miya0001/simple-map
 Description: Insert google map convert from address.
-Version: 2.8.0
+Version: 2.8.1
 Author URI: http://wpist.me/
 Domain Path: /languages
 Text Domain: simplemap