CBS Evening News anchor John Dickerson announced Monday he is leaving the network at the end of the year.

Dickerson had co-hosted the broadcast with Maurice DuBois since January and was also a chief political analyst and senior national correspondent. He previously appeared on “60 Minutes,” co-anchored “CBS This Morning” and moderated “Face the Nation.”

“At the end of this year, I will leave CBS, sixteen years after I sat in as ‘Face the Nation’ anchor for the first time,” Dickerson wrote on Instagram with a photo gallery of moments over the years. “I am extremely grateful for all that CBS gave me — the work, the audience’s attention and the honor of being a part of the network’s history — and I am grateful for my dear colleagues who’ve made me a better journalist and a better human. I will miss you.”

Deadline reported that the evening news broadcast suffered in the ratings, but Dickerson’s exit also comes amid a regime change. Conservative journalist Bari Weiss, called “Trump-friendly” by MSNBC, was hired as CBS News’ editor-in-chief earlier this month. Skydance recently acquired CBS parent Paramount and Weiss is thought to be someone who will push the network further right.

In a recent meeting, she provocatively asked “60 Minutes” staffers why the country thinks the show is biased.