diff --git a/README.md b/README.md
index 8fa2f2c7..0079aef5 100644
--- a/README.md
+++ b/README.md
@@ -3,5 +3,5 @@ Read Me
 
 Radicale is a free and open-source CalDAV and CardDAV server.
 
-For complete documentation, please visit the
-[Radicale online documentation](http://www.radicale.org/documentation)
+For the complete documentation, please visit
+[Radicale "2.1" documentation](https://radicale.org/2.1.html).