Phnom Penh, Cambodia ? Family ties between Angelina Jolie and her son, Maddox, just got a little tighter.

Actress Angelina Jolie with her son, Maddox, at the Live 8 Africa Calling concert, held at the Eden Project in Cornwall, England, on July 2. Jolie has been granted Cambodian citizenship.

A royal decree approving citizenship for Jolie, star of the “Tomb Raider” films, was signed by King Norodom Sihamoni on July 31, Sok Sam Oeun, an official of the Council of Ministers, said Friday.

Sok Sam Oeun said he was working through Jolie’s contacts in Cambodia to notify the 30-year-old actress of her new citizenship.

Jolie, who adopted Maddox from Cambodia in 2002, is giving Cambodian Vision in Development, a community development group, $1.5 million for its environmental protection efforts in remote parts of the country’s northwest.

Prime Minister Hun Sen offered Jolie citizenship in recognition of her generosity when she visited the country last summer.

He said Jolie deserves citizenship “not because of the money she has given but her good heart and love” for the Cambodian people that she has helped.

Scenes for Jolie’s 2001 movie, “Lara Croft: Tomb Raider,” were filmed at Cambodia’s famed Angkor Wat temple.

Jolie adopted her daughter, Zahara, from Ethiopia last month.