Johnson was elevated from the Seahawks' practice squad for Tuesday's Week 15 matchup with the Rams, John Boyle of the team's official site reports.
The running back will be active for the second time this season, as the Seahawks will likely use him as a depth option behind Rashaad Penny and DeeJay Dallas. With both Alex Collins and Travis Homer on the reserve/COVID-19 list, Johnson could be in line for another activation if they fail to clear protocols before the team's Week 16 game against the Bears.