diff --git a/README.md b/README.md
index b68c18f..2d97f37 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ Plugin to CASify your Redmine installation.
 
 ## Compatibility
 
-Tested with Redmine 2.2.3 and 2.3.0, but should work fine with Redmine 2.x and possibly 1.x.
+Tested with Redmine 2.2.x, 2.3.x and 2.4.x, but should work fine with Redmine 2.x and possibly 1.x.
 We use [CASino](http://casino.rbcas.com) as CAS server, but it should work with others as well.
 
 ## Installation