diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..37518ab
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2019 Tao He
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
\ No newline at end of file
diff --git a/README.md b/README.md
index 3c56bfb..015b5dd 100644
--- a/README.md
+++ b/README.md
@@ -25,5 +25,11 @@ This theme can be used just as other [Jekyll themes][1].
 
 Fork this repository and add your markdown posts to the `_posts` folder.
 
+## License
+
+This work is open sourced under the Apache License, Version 2.0.
+
+Copyright 2019 Tao He.
+
 [2]: https://pages.github.com
 [2]: https://pages.github.com/themes
\ No newline at end of file
diff --git a/_posts/2019-04-29-license.md b/_posts/2019-04-29-license.md
new file mode 100644
index 0000000..bd799a0
--- /dev/null
+++ b/_posts/2019-04-29-license.md
@@ -0,0 +1,12 @@
+---
+title: License
+author: Tao He
+date: 2019-04-28
+category: Jekyll
+layout: post
+---
+
+This work is open sourced under the Apache License, Version 2.0, using the
+same license as the original [GitBook](https://github.com/GitbookIO/gitbook) repository.
+
+Copyright 2019 Tao He.