diff --git a/docs/setup-dev-environment.md b/docs/setup-dev-environment.md
index 74076ca6..769d3d49 100644
--- a/docs/setup-dev-environment.md
+++ b/docs/setup-dev-environment.md
@@ -35,8 +35,8 @@ ssh <linuxusername>@localhost -p 4022
 First upgrade the installed packages to the latest versions, to remove any security warnings.
 
 ```
-sudo apt-get update
-sudo apt-get upgrade
+sudo apt-get update -y
+sudo apt-get upgrade -y
 ```
 
 Now we install some essential tools.