diff --git a/docs/Sysadmin-Guide.rst b/docs/Sysadmin-Guide.rst
index 3adf8e0d5fe..1f7124d1680 100644
--- a/docs/Sysadmin-Guide.rst
+++ b/docs/Sysadmin-Guide.rst
@@ -68,7 +68,7 @@ Requirements:
 
 ::
 
-    java >= 11
+    java >= 17
 
 Clone, build UAA server: