diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 507d345..ab008b3 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -1,7 +1,8 @@
-# Guideline for Issues
+# The guidelines for contributing
 
-- At first, see [Wiki](https://github.com/gitbucket/gitbucket/wiki) and check issues whether there is a same question or request in the past.
-- If you can't find same question and report, send it to [gitter room](https://gitter.im/gitbucket/gitbucket) before raising an issue.
+- At first, see [Wiki](https://github.com/gitbucket/gitbucket/wiki) and check issues and pull requests whether there is a same request in the past.
+- The highest priority of GitBucket is the ease of installation and API compatibility with GitHub, so your feature request might be rejected if they go against those principles. If you don't wanna waste your time to make a pull request, ask us about your idea at [gitter room](https://gitter.im/gitbucket/gitbucket) before staring your work.
 - We can also support in Japanese other than English at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
-- Write an issue in English. At least, write subject in English.
-- The highest priority of GitBucket is the ease of installation and API compatibility with GitHub, so your feature request might be rejected if they go against those principles.
+- You can edit the GitBucket documentation on Wiki if you have a GitHub account. When you find any mistakes or lacks in the documentation, please update it directly.
+- Write an issue, a pull request, commit messages and comments in source code in English.
+- All your contributions are handled as [Apache Software License, Version 2.0](https://github.com/gitbucket/gitbucket/blob/master/LICENSE). When you create a pull request or update the documentation, we assume you agreed this clause.
diff --git a/.github/SUPPORT.md b/.github/SUPPORT.md
new file mode 100644
index 0000000..0f7e85f
--- /dev/null
+++ b/.github/SUPPORT.md
@@ -0,0 +1,6 @@
+# The support guidelines
+
+- At first, see [Wiki](https://github.com/gitbucket/gitbucket/wiki) and check issues whether there is a same question or request in the past.
+- If you can't find same question and report, send it to [gitter room](https://gitter.im/gitbucket/gitbucket) before raising an issue.
+- We can also support in Japanese other than English at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
+- Write an issue in English. Since we can't support issues written in other languages, we close them forcibly.