diff --git a/README.md b/README.md
index 8a30a0a4691f2dbee5a8e077d85ac19cd8da6b55..b4c9c54898f5b113bc217e2fd0c5ed6af90dab0a 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,8 @@ cd cms_mlatl1t_tutorial
 Setup the software environment and launch the Jupyter Hub with:
 
 ```
-bash start_notebooks.sh
+bash start_notebooks.sh # for bash
+# source start_notebooks.sh # for zsh
 ```
 
 Take note of the output: