A new regulation added to the agreement between Novgorod the Great, Pskov and dorpatian bishop in January 1474 prohibited German merchants exporting beer to Pskov. In the following years a similar regulation was added concerning Novgorod the Great and its territory.
Beer import ban to the Russian towns was a violation of a longtime trade tradition betwenn Rus' and Livonia. This study attempts to give answer on the questions, why beer import ban was added in the Russian-Livonians agreements in the second half of the 15th century, who had on this ban interests and why this ban related only to German merchants.