diff --git a/ChangeLog b/ChangeLog
index 855be80..1e13ed5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Release 0.3.21 - 2015/04/15
+* [maintenance] #187 Remove needless gem
+* [fixed] #186 Fix the bug when server restart while logined and "Config File" page is visited
+* [fixed] #184 Focus some inputboxes when its label is clicked
+* [improve] #180 #181 #183 #185 Tweak design
+
 Release 0.3.20 - 2015/04/10
 * [fixed] #175 Fix the bug password can be changed without match between new password and password confirmation.
 * [fixed] #177 Use '0.0.0.0' as host not 'localhost' (If you want to change host, you can use `--host` option with `start` command)
diff --git a/Gemfile.lock b/Gemfile.lock
index 6b062a3..adba773 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    fluentd-ui (0.3.20)
+    fluentd-ui (0.3.21)
       addressable
       bundler
       diff-lcs
diff --git a/lib/fluentd-ui/version.rb b/lib/fluentd-ui/version.rb
index 6e9d767..3f5a750 100644
--- a/lib/fluentd-ui/version.rb
+++ b/lib/fluentd-ui/version.rb
@@ -1,3 +1,3 @@
 module FluentdUI
-  VERSION = "0.3.20"
+  VERSION = "0.3.21"
 end