Marital Status change between H1B filing and stamping

Hi

My employer have filed my H1B application on march and marital status as single.

I was married on April 29. Expected to go for stamping next month.

Can someone help me on how to deal with this?

Congratulations on your wedding. An employer letter that states they are aware you got married after filing of the initial petition is good enough. This avoids problems with any H-4 plans for your spouse.