GENERAL PART
Chapter II. LAW ON CRIMINAL LIABILITY
Article 5. Retroactive effect of the law on criminal liability in time
1. The law on criminal liability, which repeals the criminality of an act or lenifies criminal liability, shall be retroactive in time, that is it shall apply to persons who had committed relevant acts before that law entered into force, including the persons serving their sentence or those who have completed their sentence but have a conviction.
2. The law on criminal liability that criminalizes an act or increases criminal liability shall not be retroactive in time.
3. The law on criminal liability, which partially lenifies and partially increases criminal liability, shall be retroactive in time only in the part which lenifies the liability.
4. In the event that the law on criminal liability has been amended several times since a person committed an act by stipulated by this Code, the law that abolishes criminality of an act or lenifies criminal liability shall be deemed as retroactive. (Article 5 in version of Law No 270-VI (270-17) of 15.04.2008)
EDIT.