When did the paper change on a hundred dollar bill in the us?

The paper used for the U.S. one-hundred-dollar bill changed significantly with the introduction of the redesigned series in 2013. The new bills incorporated advanced security features and a different composition, including a polymer blend that makes them more durable and harder to counterfeit. Prior to this, the last major redesign occurred in 1996, which introduced some updated security features but maintained the traditional paper composition.