diff --git a/LICENSE.md b/LICENSE.md
index e69de29..c89b4c5 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -0,0 +1,5 @@
+Google/Blockly is licensed under Apache License (Version 2.0).
+
+Microsoft/pxt-blockly is licensed under MIT.
+
+ocoge is licensed under MIT.