diff --git a/README.md b/README.md
index b677fa6..57f3e8c 100644
--- a/README.md
+++ b/README.md
@@ -44,3 +44,7 @@ manual LDIF imports etc. (or provide a staging instance)
 
 * [devise_ldap_authenticatable](https://github.com/cschiewek/devise_ldap_authenticatable)
 * [net/ldap](https://www.rubydoc.info/gems/net-ldap/Net/LDAP)
+
+## License
+
+[GNU Affero General Public License v3.0](https://choosealicense.com/licenses/agpl-3.0/)