diff --git a/README b/README
index bbaee49..e59612e 100644
--- a/README
+++ b/README
@@ -1,3 +1,5 @@
+*This repository contains the source of the Tampermonkey extension up to version 2.9.*
+*All newer versions are distributed under a proprietary license.*
 
 Tampermonkey is the most popular userscript manager for Google Chrome.