In 1965 it was revealed that Lubyanka was to become a transfer point to the planned Tagansko-Krasnopresnenskaya Line, making it clear that the station would need to be completed. Technology had advanced to the point where the building of the central hall, which had been deemed impossible in the 1930s, could finally be accomplished, though this project still took more than seven years to complete. The first phase of the station's expansion was the construction of a second entrance at the northern end, which was completed in 1968.