diff --git a/README.md b/README.md
index dac95d8..889dfb3 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ Currently implemented commands:
 - open: opens a file from filesystem
 - clear: clears all clouds
 
+This plugin is published under GNU General Public License v3.0 or later.
 
 howto build
 -----------