diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..9e63986
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) oti.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/README.md b/README.md
index ddcd025..2c52ac4 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-# decomoji generator
+# decomoji-generator
 
-decomoji generator はデコモジ作成支援ツールです。
+decomoji-generator はデコモジ作成支援ツールです。
 
 CSV ファイルを入力とし、Adobe Illustrator 上にデコモジを仮レイアウトした状態で展開します。
 
@@ -37,3 +37,7 @@ CSV ファイルを入力とし、Adobe Illustrator 上にデコモジを仮レ
 3. `generate-decomoji.jsx` ファイルを選択する
 4. ファイルダイアログが立ち上がるので、入力とする CSV ファイルを選択する
 5. すこし待つと、新しいドキュメント上にアートボードとデコモジが展開される
+
+## ライセンス
+
+Copyright (c) oti. Under the [MIT License](LICENSE).
\ No newline at end of file