On the eve of the first regular-season week, the Pittsburgh Steelers secured their defensive anchor for at least five more years with a historic contract.

The Steelers and All-Pro defensive lineman Cameron Heyward have finalized a five-year, $75.1 million extension, a league source told ESPN’s Jeremy Fowler late Sunday night. The monster contract yields the highest per-year average for any defensive player over the age of 30 in NFL history.

The deal includes the last year of Heyward’s current contract and has $65.6 million in new money.

A 2011 first-rounder, Heyward, 31, is entering his 10th season with the Steelers coming off a nine-sack, Pro Bowl season. The Ohio State product, a starter for the past seven seasons, has 54 career sacks and 117 quarterback hits.

Heyward seemingly tweeted confirmation of the deal Sunday night, posting a video of his head superimposed on Leonardo DiCaprio’s in a famous scene from “The Wolf of Wall Street” in which DiCaprio’s character proclaims he isn’t leaving. Pittsburgh coach Mike Tomlin, Ben RoethlisbergerJuJu Smith-SchusterJames ConnerMinkah FitzpatrickMaurkice Pouncey and T.J. Watt also are photo-edited into the clip.