System Firewall Tampered Module Warning

The other day I upgrade the Firewall Module to and now I am getting this warning: "Module: “System Firewall”, File: “/var/www/html/admin/modules/firewall/module.sig altered”.

Not sure why this is happening and I have not been able to track down the issue. Has anyone else upgrading to experienced this or is this an isolated incident? Does anyone have any suggestions as to how to remedy the issue?

FreePBX: 13.0.157 (Edge Mode)
Asterisk: 13.9.1

That unfortunately did not resolve the issue.