diff --git a/LICENSE b/LICENSE
index ab95127..4ce7801 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2018 Yamada, Yasuhiro
+Copyright (c) 2019 Yamada, Yasuhiro
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 842175c..23e9bac 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,12 @@
   <a href="https://github.com/greymd/tmux-xpanes/releases/latest"><img src="https://img.shields.io/github/release/greymd/tmux-xpanes.svg" alt="Latest version" /></a>
   <a href="https://travis-ci.org/greymd/tmux-xpanes"><img src="https://travis-ci.org/greymd/tmux-xpanes.svg?branch=master" alt="Build Status" /></a>
   <a href="LICENSE" alt="MIT License"><img src="http://img.shields.io/badge/license-MIT-blue.svg?style=flat" /></a>
+  <a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A7ZRLWLDKHK36&source=url"><img src="https://www.paypalobjects.com/en_US/i/btn/btn_donate_SM.gif" alt="Donation" /></a>
 </p>
+
+
 <p align="center">
-  <img src="https://raw.githubusercontent.com/wiki/greymd/tmux-xpanes/img/movie_v3.gif" alt="Introduction Git Animation" />
+  <img src="https://raw.githubusercontent.com/wiki/greymd/tmux-xpanes/img/movie_v4.gif" alt="Introduction Git Animation" />
 </p>
 
 ## TL;DR
@@ -78,7 +81,7 @@ $ brew install tmux-xpanes
 ## With `yum` (For CentOS, RHEL users)
 
 ```sh
-$ sudo yum install https://github.com/greymd/tmux-xpanes/releases/download/v3.1.1/tmux-xpanes_v3.1.1.rpm
+$ sudo yum install https://github.com/greymd/tmux-xpanes/releases/download/v4.0.0/tmux-xpanes_v4.0.0.rpm
 ```
 
 ## With `apt` (For Ubuntu users)
@@ -109,7 +112,7 @@ zplug "greymd/tmux-xpanes"
 
 ```sh
 # Download with wget
-$ wget https://raw.githubusercontent.com/greymd/tmux-xpanes/v3.1.1/bin/xpanes -O ./xpanes
+$ wget https://raw.githubusercontent.com/greymd/tmux-xpanes/v4.0.0/bin/xpanes -O ./xpanes
 
 # Put it under PATH and make it executable.
 $ sudo install -m 0755 xpanes /usr/local/bin/xpanes
@@ -1032,3 +1035,10 @@ $ bash test/cases_smoke.sh
 # License
 
 The scripts is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).
+
+
+# Donation
+
+If this project help you reduce time, you can give me a cup of coffee :)
+
+<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A7ZRLWLDKHK36&source=url" target="_blank" rel="noopener"><img src="https://www.paypalobjects.com/en_US/i/btn/btn_donate_SM.gif" alt="Donation" /></a>
diff --git a/bin/xpanes b/bin/xpanes
index 1056007..4e9f7da 100755
--- a/bin/xpanes
+++ b/bin/xpanes
@@ -224,7 +224,7 @@ FORMAT:
     And etc.
     Other sequences are available. Please refer to date(1) manual.
 
-Copyright (c) 2018 Yamada, Yasuhiro
+Copyright (c) 2019 Yamada, Yasuhiro
 Released under the MIT License.
 https://github.com/greymd/tmux-xpanes
 _EOS_
diff --git a/man/man.md b/man/man.md
index bd26718..3920eec 100644
--- a/man/man.md
+++ b/man/man.md
@@ -1,4 +1,4 @@
-XPANES 1 "JUN 2018" "User Commands" ""
+XPANES 1 "FEB 2019" "User Commands" ""
 =======================================
 
 NAME
@@ -488,7 +488,7 @@ tmux(1)
 AUTHOR AND COPYRIGHT
 ------
 
-Copyright (c) 2018 Yamada, Yasuhiro <greengregson@gmail.com> Released under the MIT License.
+Copyright (c) 2019 Yamada, Yasuhiro <greengregson@gmail.com> Released under the MIT License.
 https://github.com/greymd/tmux-xpanes
 
 
diff --git a/man/xpanes.1 b/man/xpanes.1
index 21ca2e3..2a36b9d 100644
--- a/man/xpanes.1
+++ b/man/xpanes.1
@@ -1,4 +1,4 @@
-.TH XPANES 1 "JUN 2018" "User Commands" ""
+.TH XPANES 1 "FEB 2019" "User Commands" ""
 .SH NAME
 .PP
 xpanes, tmux\-xpanes \- Ultimate terminal divider powered by tmux
@@ -528,7 +528,7 @@ Each line provided by standard input is corresponding to the each pane's command
 .BR tmux (1)
 .SH AUTHOR AND COPYRIGHT
 .PP
-Copyright (c) 2018 Yamada, Yasuhiro \[la]greengregson@gmail.com\[ra] Released under the MIT License.
+Copyright (c) 2019 Yamada, Yasuhiro \[la]greengregson@gmail.com\[ra] Released under the MIT License.
 \[la]https://github.com/greymd/tmux-xpanes\[ra]
 .SH ACKNOWLEDGEMENTS
 .PP
diff --git a/tmux-xpanes.spec b/tmux-xpanes.spec
index 0975426..51b5294 100644
--- a/tmux-xpanes.spec
+++ b/tmux-xpanes.spec
@@ -1,7 +1,7 @@
 
 Name:       tmux-xpanes
 Summary:    Awesome tmux-based terminal divider
-Version:    3.1.1
+Version:    4.0.0
 Group:      Applications
 License:    MIT
 Release:    %(date '+%'s)