diff --git a/scripts/upgrade b/scripts/upgrade
index 621949c..f16f6b4 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -19,6 +19,15 @@ upgrade_type=$(ynh_check_app_version_changed)
 # Retrieve YunoHost main domain for mails to work
 main_domain=$(cat /etc/yunohost/current_host)
 
+#=================================================
+# LOAD SETTINGS
+#=================================================
+
+if [ -z "${jwt_key:-}" ]; then
+	jwt_key=$(ynh_string_random --length=45 | base64)
+	ynh_app_setting_set --app=$app --key=jwt_key --value=$jwt_key
+fi
+
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================