Ukraine has published Letter No. 72/14-612/1-20325 of 21 February 2025 from the Ministry of Foreign Affairs, which states that the amending protocol to the administrative arrangement to the 2001 social security agreement between Bulgaria and Ukraine entered into force on 13 November 2024. The protocol, signed 8 October 2024 and 13 November 2024, allows Bulgaria and Ukraine to conclude an electronic data exchange agreement to facilitate and accelerate the exchange of social security information.