diff --git a/cluster/aws/templates/salt-master.sh b/cluster/aws/templates/salt-master.sh
index 5e70a1f70a3..e6a10f5aa3b 100755
--- a/cluster/aws/templates/salt-master.sh
+++ b/cluster/aws/templates/salt-master.sh
@@ -58,5 +58,5 @@ EOF
 #
 # -M installs the master
 set +x
-curl -L --connect-timeout 20 --retry 6 --retry-delay 10 http://bootstrap.saltstack.com | sh -s -- -M -X
+curl -L --connect-timeout 20 --retry 6 --retry-delay 10 https://bootstrap.saltstack.com | sh -s -- -M -X
 set -x