As you know from being on here a while, we are all in favour of upping the weight
But mini stalls happen all the time. The easiest thing is to change it but the BEST thing is to continue on your progress. Steve and others are in favour of adding reps when weight is not forthcoming so keep going as you are for a while at least. Progress will be slower but it will still be better than 95%+ of others. The time will come when lower reps and higher weight will be a good choice but for now, I'd personally like to see you continue on what is a solid looking program.