The 35-year-old rap star was scheduled to be arraigned Wednesday in Pasadena, prosecutors said in a statement.
Snoop Dogg faces charges of gun possession by a felon and sale or transportation of marijuana.
He was arrested Oct. 26 by Burbank police at Bob Hope Airport on suspicion of transportation of a controlled substance. Burbank police later discovered a gun at his home.
If convicted, he faces up to four years in state prison.
"These were changes we fully expected," said Snoop Dogg's attorney, Donald Etra. "They will be dealt with in court tomorrow. The matter will be resolved tomorrow."
The rapper was convicted in 1990 of cocaine possession and charged with gun possession after a 1993 traffic stop. He pleaded guilty in exchange for three years' probation and a promise to make public-service announcements against violence.
The rapper's manager, Constance Schwartz, said there would be no comment Tuesday but a written statement would be issued Wednesday.