Ribeiro has missed the last seven games with an upper-body injury, and had been placed on IR, retroactive to January 7, last Monday.
Morrow is sidelined with an upper-body injury suffered in Saturday's game against the Minnesota Wild. His move to IR is retroactive to January 21.
In 40 games this season, Ribeiro has registered 10 goals and 21 assists. Morrow has totaled eight goals and 22 points in 41 games this year.