SACRAMENTO, Calif. — California Gov. Jerry Brown on Wednesday approved raising the legal age to buy tobacco for smoking, dipping, chewing and vaping from 18 to 21.

The new law, which will take effect June 9, makes California the second state to raise the legal smoking age to 21. It will not apply to military personnel.

Brown did not say why he signed the measure along with four others restricting tobacco use in various ways, and his staff declined to comment.

“The action speaks for itself,” Brown spokesman Deborah Hoffman said.

Supporters of the law said it aims to deter adolescents from the harmful, sometimes fatal effects of nicotine addiction. The Institute of Medicine reports that 90 percent of daily smokers began using tobacco before turning 19.