diff --git a/labs/tools-setup.md b/labs/tools-setup.md
index ab8682c7fc59fa07c86570220c455c1247207825..86989a8462bac8a7bada44d5a8881b3f1a8ab1d5 100644
--- a/labs/tools-setup.md
+++ b/labs/tools-setup.md
@@ -32,6 +32,8 @@ chmod +x cs
 ./cs setup -y --jvm 8 --apps cs,sbt
 ```
 
+Please reboot after this point.
+
 ### On macOS
 
 First, install the Homebrew package manager: