diff --git a/tests/scalability/prepare-ec2.sh b/tests/scalability/prepare-ec2.sh
index 30c6d5654cb..73462e968b2 100755
--- a/tests/scalability/prepare-ec2.sh
+++ b/tests/scalability/prepare-ec2.sh
@@ -6,7 +6,7 @@ mkdir -p /cht
 chmod 777 /cht;
 
 # Install Docker CE
-apt-get update --allow-insecure-repositories
+apt-get update
 apt-get install -y \
     apt-transport-https \
     ca-certificates \
@@ -18,16 +18,16 @@ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o
 echo \
   "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
-apt-get update --allow-insecure-repositories
-apt-get install -y docker-ce docker-ce-cli containerd.io --allow-insecure-repositories
+apt-get update
+apt-get install -y docker-ce docker-ce-cli containerd.io
 
 # Install docker-compose
 curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" \
 -o /usr/local/bin/docker-compose
 chmod +x /usr/local/bin/docker-compose
 
-mkdir /cht/upgrade-service
-mkdir /cht/compose
+mkdir -p /cht/upgrade-service
+mkdir -p /cht/compose
 
 curl -s https://raw.githubusercontent.com/medic/cht-upgrade-service/main/docker-compose.yml \
   -o /cht/upgrade-service/docker-compose.yml