diff --git a/ChangeLog.md b/ChangeLog.md
index 5f660ca..dd0b904 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## Release 0.4.1 - 2015/04/24
+
+* [improved] [#162](https://github.com/fluent/fluentd-ui/pull/162) [#191](https://github.com/fluent/fluentd-ui/pull/191) Support multiline option for [in_tail](http://docs.fluentd.org/articles/in_tail) plugin
+
 ## Release 0.4.0 - 2015/04/15
 
 * [improved] [#190](https://github.com/fluent/fluentd-ui/pull/190) Use markdown format for ChangeLog.md
diff --git a/Gemfile.lock b/Gemfile.lock
index 497ab8a..7193da8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    fluentd-ui (0.4.0)
+    fluentd-ui (0.4.1)
       addressable
       bundler
       diff-lcs
diff --git a/lib/fluentd-ui/version.rb b/lib/fluentd-ui/version.rb
index 1cfef57..e9f15af 100644
--- a/lib/fluentd-ui/version.rb
+++ b/lib/fluentd-ui/version.rb
@@ -1,3 +1,3 @@
 module FluentdUI
-  VERSION = "0.4.0"
+  VERSION = "0.4.1"
 end