The new 13-episode season will premiere in 2012.
"Under executive producer Jack Kenny's leadership, this superlative team of writers, cast, and crew continue to turn out a series that only gets better and better with every episode," Syfy's president of original content, Mark Stern, told the magazine. "Warehouse 13 is deservedly the most popular series in our history and we're delighted to renew it for a fourth season."
Eddie McClintock and Joanne Kelly star in the series, about U.S. Secret Service agents assigned to a secret government warehouse full of supernatural artifacts. Warehouse 13, which recently added Smallville alum Aaron Ashmore to the cast, has averaged 2.3 million viewers in its first five outings this season.
News of Warehouse 13's bright future comes just days after the cable network announced fan favorite Eureka would not be coming back for a sixth and final season, as originally reported. Eureka will instead produce an extra episode for Season 5 to wrap up the series.