James Hibberd
January 13, 2012 AT 09:24 PM EST

Syfy is filling up its up Warehouse a little more.

The network has ordered seven additional episodes of the summer series Warehouse 13, expanding its fourth season to 20 episodes. Warehouse, about two Secret Service agents who hunt dangerous supernatural artifacts, is the network’s most popular show, often averaging more than 3 million viewers per episode if you include seven days of DVR viewership. Last season also saw Aaron Ashmore join the cast.

Read more:

‘Warehouse 13’ renewed for fourth season

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