diff --git a/tools/tox_install.sh b/tools/tox_install.sh
index b69b09f8..8b022f75 100755
--- a/tools/tox_install.sh
+++ b/tools/tox_install.sh
@@ -33,7 +33,7 @@ elif [ -x "$ZUUL_CLONER" ]; then
     $ZUUL_CLONER --cache-dir \
         /opt/git \
         --branch $BRANCH_NAME \
-        git://git.openstack.org \
+        https://git.openstack.org \
         openstack/requirements
     cd openstack/requirements
     $install_cmd -e .