diff --git a/docs/02-certificate-authority.md b/docs/02-certificate-authority.md
index 09609b8..d8c0889 100644
--- a/docs/02-certificate-authority.md
+++ b/docs/02-certificate-authority.md
@@ -271,12 +271,12 @@ The following commands will copy the TLS certificates and keys to each Kubernete
 
 ```
 for host in worker0 worker1 worker2; do
-  gcloud compute scp ca.pem kube-proxy.pem kube-proxy-key.pem ${host}:~/
+  gcloud compute copy-files ca.pem kube-proxy.pem kube-proxy-key.pem ${host}:~/
 done
 ```
 
 ```
 for host in controller0 controller1 controller2; do
-  gcloud compute scp ca.pem ca-key.pem kubernetes-key.pem kubernetes.pem ${host}:~/
+  gcloud compute copy-files ca.pem ca-key.pem kubernetes-key.pem kubernetes.pem ${host}:~/
 done
 ```