diff --git a/README.md b/README.md
index 9d9f903c29f6ad9f4c9f4476bc653e2718b07caf..4357be935261d2df909e2e1fbce22b69a668bec6 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Mini-workshop/tutorial on design of microfabrication layout masks
 
 -  Layout editing software: [KLayout](https://www.klayout.de) preffered. [LayoutEditor](https://layouteditor.com) if you can afford the paid version
 
-## Optional software
+## Optional software (strongly encouraged)
 -  Text editor with syntax highlithing and whatever goodies you need for programming (e.g. [Atom](https://atom.io), Emacs, Vim,...)
 -  Python 3 + Pip + Packages
   -  Windows: Follow [these](https://phoenixnap.com/kb/how-to-install-python-3-windows) instructions up to step 5.