diff --git a/doc/02-Installation.md b/doc/02-Installation.md
index a358a146..a5d98927 100644
--- a/doc/02-Installation.md
+++ b/doc/02-Installation.md
@@ -10,7 +10,7 @@ Requirements
 ------------
 
 * Icinga 2 (>= 2.4.3)
-* Icinga Web 2 (>= 2.2.0)
+* Icinga Web 2 (>= 2.2.0 - but >= 2.4.1 is strongly suggested)
 * A database, MySQL (>= 5.1) or PostgreSQL (>= 9.1) database (MariaDB and
   other forks are also fine)
 * php5-curl