diff --git a/changelog.txt b/changelog.txt
index 0f75383..a18078c 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -2,10 +2,22 @@ Changelog -----------------------------------
 version:1.503
 
 Overview of Changes
-
+	Fixed wrong CSS Class name list-category-archives,list-tag-archives
+		remove list-
+	Modified Change stylesheet handlename admin_css to admin_options
+	Modified Change Relate Posts featured image size from 90px to 100px
+	Modified Gutenberg Plugin CSS
 
 Files Modified
-
+	modified:   admin-options.css
+	modified:   css3.css
+	modified:   functions.php
+	modified:   languages/css/ja.css
+	modified:   lib/csscolor.css.php
+	modified:   plugins/plugins-presentation.php
+	modified:   raindrops.js
+	modified:   responsiveness.css
+	modified:   style.css
 
 Description of Code Changes
 	please see https://themes.trac.wordpress.org/changeset?old_path=raindrops/1.502&new_path=raindrops/1.503