Rykov returned from Siberia after the February Revolution of 1917 and re-joined the Bolsheviks, although he remained skeptical of their more radical inclinations. He became a member of the Petrograd Soviet and the Moscow Soviet. At the 6th Congress of the Bolshevik Party in July–August 1917 he was elected to the Central Committee. During the October Revolution of 1917, he was a member of the Military Revolutionary Committee in Moscow.