diff --git a/scripts/upgrade b/scripts/upgrade
index 849dc80..11db23a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -111,6 +111,8 @@ else
 	pushd $install_dir/ghost
 		# Make sure the app does not expect to manage its own process
 		ynh_exec_as $app $ynh_node_load_PATH $install_dir/node_modules/ghost-cli/bin/ghost config --process local
+		# Make sure the app config runs on https
+		ynh_exec_as $app $ynh_node_load_PATH $install_dir/node_modules/ghost-cli/bin/ghost config --url https://$domain$path
 		# Upgrade Ghost itself
 		ynh_exec_as $app $ynh_node_load_PATH $install_dir/node_modules/ghost-cli/bin/ghost update $(ynh_app_upstream_version) \
 			--no-prompt --no-auto-rollback --no-restart