diff --git a/README.md b/README.md
index d6f31c0..150d369 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,9 @@ and `INISection`s back into an INI document. Handy for if your program
 has some sort of GUI configuration interface or if you're passing around
 INI through a network connection.
 
+initial.d is licensed under the Boost Software License, version 1.0. See
+COPYING for the full licence text.
+
 ## Demo
 
 ```d