symantec.cloud SPF record missing some IPs

According to my DMARC reports from various email providers (Yahoo, Google etc.), the following IP address is sending email from my domain but is missing from the Symantec.cloud SPF record:

195.245.231.131

According to the RIPE entry for the IP address, it's part of a block owned by Symantec:

https://apps.db.ripe.net/search/query.html?searcht...

Please can Symantec update their SPF record (spf.messagelabs.com) to include the range?