Congratulations to Mitsyn Valery Valentinovich! On 19 January 2023. Valery Valentinovich Mitsyn, Senior Researcher and Group Leader of technical and system support and development of UNIX of the Division of Computer Communications and Distributed Information Systems of the Meshcheryakov Laboratory of Information Technologies (MLIT), celebrates his 70th anniversary. We congratulate Valery Valentinovich on his anniversary and wish him health, happiness, further success in work and a prosperous family life. Directorate of the Meshcheryakov Laboratory of Information Technologies, JINR Directorate, colleagues and friends