diff --git a/build-tools/url_utils.sh b/build-tools/url_utils.sh
index 35b55603..640bfef0 100755
--- a/build-tools/url_utils.sh
+++ b/build-tools/url_utils.sh
@@ -236,7 +236,7 @@ repo_url_to_sub_path () {
 
 STX_MIRROR_PROTOCOL="https"
 STX_MIRROR_HOST="mirror.starlingx.windriver.com"
-STX_MIRROR_PORT="80"
+STX_MIRROR_PORT="443"
 STX_MIRROR_URL_ROOT="mirror"
 
 url_to_stx_mirror_url () {