The East African nation beat the hosts 42-28 in the final of the event, which also featured Malaysia, held at the Kowloon Park Sports Centre from March 16 to 19. 

The INF has updated its world rankings to reflect matches played between February 8 and March 19.

Hong Kong have risen one place to 25^th, while Asian champions Malaysia have dropped two places to 21^st.

Zimbabwe won both of their round-robin matches at the Tri-Nations tournament, beating Hong Kong 46-30 and Malaysia 52-29.

Hong Kong secured their place in the final with a 30-26 victory over Malaysia.

Zimbabwe captain Perpetua Siyachitema said the competition showed how much the nation has improved.

"We are so excited," she added.

"The win means so much to us."

Australia are top of the INF world rankings, followed by New Zealand in second and England in third.