Terms of the deal were not disclosed.
Webster played in all 16 regular season games last season, notching 33 tackles as starting middle linebacker Shelton Quarles' backup. Webster received some significant playing time toward the end of the last season due to the fact that the Bucs were concerned they would lose Quarles in free agency after his contract expired at the end of the 2002 season.
By re-signing Quarles last month and Webster on Thursday, the team was able to retain both of its "Mike" linebackers from last season.
In addition to his contributions as a backup middle linebacker, Webster ranked fourth on the team with 16 special teams tackles.
Webster originally entered the league as a third-round draft pick of the Buccaneers in 2000. He has played in 48 games and has totaled 118 tackles, five passes defensed and 27 special teams tackles during his three-year career.
Despite inking Webster to a one-year deal, the Bucs are still expected to select a linebacker in this weekend's NFL Draft.