diff --git a/docs/install/custom-server.rst b/docs/install/custom-server.rst
index bcb616d..cac3060 100644
--- a/docs/install/custom-server.rst
+++ b/docs/install/custom-server.rst
@@ -31,7 +31,7 @@ Pre-requisites
 ==============
 
 #. Some familiarity with the command line.
-#. A server running Ubuntu 18.04 where you have root access.
+#. A server running Ubuntu 18.04+ where you have root access.
 #. At least **1GB** of RAM on your server.
 #. Ability to ``ssh`` into the server & run commands from the prompt.
 #. An **IP address** where the server can be reached from the browsers of your target audience.