diff --git a/checkmk.sh b/checkmk.sh
index 84e7fdc..1155292 100644
--- a/checkmk.sh
+++ b/checkmk.sh
@@ -26,7 +26,7 @@ set -e
 
 CHECK_MK_SERVER="gauntcheckmk.home.johnhgaunt.com"
 SITE_NAME="gaunt"
-API_URL="http://${CHECK_MK_SERVER}/${SITE_NAME}/check_mk/api/1.0"
+API_URL="https://${CHECK_MK_SERVER}/${SITE_NAME}/check_mk/api/1.0"
 USERNMAE="agent_registration"
 PASSWORD="$1"
 AUTHORIZATION_HEADER="Authorization: Bearer ${USERNMAE} ${PASSWORD}"