Jackson didn't practice this week after taking a knee to his back during Sunday's loss to the New England Patriots. Backup veteran QB Tyler Huntley will get the start for the Ravens.
Huntley finished last week's game, completing 9-of-10 passes for 65 yards. The game against the Packers will be his second start of the season - first came earlier in the year when he led the Ravens to a 30-16 win over the now 11-4 Chicago Bears.
Now, the Ravens will need Huntley to lead them to another victory against another tough NFC North opponent.
Baltimore is currently in the midst of a tight playoff race with the Pittsburgh Steelers. Should the Ravens lose on Saturday, they will be officially eliminated from playoff contention. They need to win out their final two games and the Steelers to lose out their final two.
Both the Ravens and Steelers will meet for the final game of the season in Week 18.