diff --git a/os-brainux/setup_brainux.sh b/os-brainux/setup_brainux.sh
index c4b36c9..af74618 100755
--- a/os-brainux/setup_brainux.sh
+++ b/os-brainux/setup_brainux.sh
@@ -57,12 +57,9 @@ echo "brain" > /etc/hostname
 
 # curl, ca-certificates: downloads the GPG key from packagecloud
 # gnupg, debian-archive-keyring: packagecloud verification dependency
+# apt-transport-https: needed before we can add the HTTPS packagecloud source
 DEBIAN_FRONTEND=noninteractive \
-    apt install -y curl ca-certificates gnupg debian-archive-keyring
-
-# apt-transport-https can be installed after debian-archive-keyring being installed
-DEBIAN_FRONTEND=noninteractive \
-    apt install -y apt-transport-https
+    apt install -y curl ca-certificates gnupg debian-archive-keyring apt-transport-https
 
 # Install GPG key and packagecloud repository config
 mkdir -p /etc/apt/keyrings