IPS Signature has not updated

We have SEP 12.1 deployed to all clients on the network.

We have a Windows 7 Pro machine which doesnt get switched off (due to its purpose of use) where the IPS Signatures have not updated since 20/06/2014

On the machine itself, everything appears as green and updated with no issues.

Is there automatic way to update the IPS signatures on the machine without a restart?