diff --git a/docs/08-bootstrapping-kubernetes-controllers.md b/docs/08-bootstrapping-kubernetes-controllers.md
index 1c2883b..7c93525 100644
--- a/docs/08-bootstrapping-kubernetes-controllers.md
+++ b/docs/08-bootstrapping-kubernetes-controllers.md
@@ -209,6 +209,7 @@ A [Google Network Load Balancer](https://cloud.google.com/compute/docs/load-bala
 Install a basic web server to handle HTTP health checks:
 
 ```
+sudo apt-get update
 sudo apt-get install -y nginx
 ```