Hard time finding insurance for Mississippi

[AugustArborists]

None of my local insurance agencies are licensed in Miss., so they are not able to issue a rider (ryder?). My Wyoming insurance is up to date, but now I'm kind stuck...do I stop in Jackson and take out a whole new policy? Carrying Insurance in two states might be a bit costly, but if I have to do it, I will. Any advice would be appreciated greatly.

Thank you,
Augie Heuer