Currently I have 9 allowances. I just had another child and now I have 4. Can I claim 11 allowances instead of 9? Last year I had a refund of 3500.

I currently make 100,000 a year before taxes and wanted to raise my pay as we are thinking of buying a house.  My wife does not work and I have 4 children.  Currently I am claiming 9 allowances.  Am I able to claim 11?  I normally get a refund of 3500 a year.