PARIS — French lawmakers voted Wednesday to continue airstrikes in Syria against the Islamic State, the group that claimed responsibility for the Nov. 13 attacks that killed 130 people in the Paris area, while Germany’s chancellor said her country would do more in the global fight against the group.

The French Parliament’s upper house, the Senate, voted 325 to 0 with 21 abstentions to prolong France’s airstrikes in Syria beyond early January. The lower house earlier voted 515 to 4 in favor.

French fighter jets joined the American-led coalition against extremists of the Islamic State, also known as ISIS or ISIL, in Iraq in 2014 and expanded their mission to Islamic State targets in Syria in September. President François Hollande cited specific threats against French interests stemming from the Islamic State in Syria.

The vote came as Mr. Hollande and Chancellor Angela Merkel of Germany discussed how to combat the group, which has spread its violence to Europe and North Africa.