diff --git a/scripts/upgrade b/scripts/upgrade
index c20ae68..0ea685d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -169,6 +169,17 @@ chown -R $app:www-data "$final_path"
 chmod +x "$backend_path/vikunja"
 chown -R $app:www-data "$backend_path/files"
 
+#=================================================
+# UPGRADE A CONFIGURATION
+#=================================================
+ynh_script_progression --message="Upgrading a configuration file..." --weight=1
+
+redis_db=$(ynh_redis_get_free_db)
+ynh_add_config --template="../conf/config.yml" --destination="$backend_path/config.yml"
+
+chmod 400 "$backend_path/config.yml"
+chown $app:$app "$backend_path/config.yml"
+
 #=================================================
 # NGINX CONFIGURATION
 #=================================================