Going to a larger cassette always calls for checking that you have adequate chain length.

A large number of mechanics fit chains based on big/big+1", which is the minimum acceptable length. If so, then there's no upside room, and you risk destroying your drive train if you shift into the new big/big combination.

So, making sure the chain is long enough, or replacing it is the first and most critical step.

The other consideration is RD take up capacity. (big+big - small+small). The added 4 teeth may take you beyond the rated capacity. However that's not as critical. If you measure the chain based on big/big, then the only issue may be that the RD can't take up the slack using the smaller chainring with the smallest few rear sprockets. You don't likely use those combinations, and no harm will come if you shift into them.