Vladimir Norov and Rangin Dadfar Spanta signed a memorandum to that effect in Tashkent today.
Spanta is on a three-day visit to Uzbekistan for talks that regional media say aim to discuss Tashkent's participation in the reconstruction of Afghanistan.
Uzbekistan last month pledged to help its southern neighbor with power supplies.
The Afghan Foreign Ministry on November 30 said that to mark Spanta's visit, Uzbek authorities had released 12 Afghan prisoners from custody.
Whether they were freed under the much larger amnesty that the Uzbek Senate voted that same day is unclear.
Spanta is due to travel to the historic Silk Road cities of Samarkand and Bukhara before returning to Afghanistan on December 3.