diff --git a/.github/steps/4-personalize-codespace.md b/.github/steps/4-personalize-codespace.md
index e6916a5..6dd1015 100644
--- a/.github/steps/4-personalize-codespace.md
+++ b/.github/steps/4-personalize-codespace.md
@@ -44,7 +44,7 @@ Let's see how this works!
    #!/bin/bash
 
    sudo apt-get update
-   sudo apt-get install sl
+   sudo apt-get install -y sl
    echo "export PATH=\$PATH:/usr/games" >> ~/.bashrc
    ```