In 1957 the open-air venue was covered with a steel structure that required supporting columns,[5] and 4,800 temporary seats were installed with the standing capacity reduced to 7,000.

[6] Another significant renovation took place between 1989 and 1992, in time for hosting the 1992 Men's Ice Hockey World Championships, and following this the arena now had a total of 7,747 seats until its full reconstruction started in early 2009.

This time the interior was changed significantly (new seats, locker rooms and technical equipment) and the arena received a new reinforced concrete roof.

More than €87 million was spent to install a new steel roof, modernize facilities, build two new adjacent practice arenas, an underground car park and increase the seating capacity from 8,350 to 10,000.

On October 2, 2011, the arena hosted another NHL pre-season game, this time between HC Slovan Bratislava and New York Rangers who beat the home team 4–1.