The Parks and Recreation producer died of a heroin overdose at age 30.
"I miss Harris Wittels dearly. He passed away a year ago today," Ansari tweeted. "I'm glad I knew him as a friend and collaborator."
I miss Harris Wittels dearly. He passed away a year ago today. I'm glad I knew him as a friend and collaborator.— Aziz Ansari (@azizansari) February 19, 2016
In addition to stand-up comedy and his work on Parks and Rec, Wittels also worked on Ansari's Netflix series Master of None. He is also known for creating the term "humblebrag," and publishing the 2012 book Humblebrag: The Art of False Modesty. He was a frequent guest on Comedy Bang Bang with Scott Aukerman.
The comedian had been open about his addiction struggles, opening up to comedian Pete Holmes on his podcast You Made it Weird back in 2012, revealing he had been a drug user since age 12.
Following Wittels' death last year, Ansari, 32, wrote a heartfelt post honoring his friend.
"This has been so hard to write because I just keep wanting to add more and more stories and more jokes and more everything, but I'd never be able to finish it," Ansari wrote in a Tumblr post last year. "You are far too special to sum up in any kind of piece like this. You were one of the best and we all will miss you."
On Friday, Ansari also remembered Wittles by sharing other memories of the late comedian.
Go read his tweets at @twittels.— Aziz Ansari (@azizansari) February 19, 2016
Here's a thing I wrote about Harris after he passed: https://t.co/5YYNLelZRy— Aziz Ansari (@azizansari) February 19, 2016
And here's another thing I wrote about Harris for the NYTimes Mag: https://t.co/CiI5FGocY3— Aziz Ansari (@azizansari) February 19, 2016
Here's something Harris' incredible sister Stephanie wrote: https://t.co/w4HZXUVp4m— Aziz Ansari (@azizansari) February 19, 2016
In a New York Times piece last year, Ansari recalled meeting Wittles eight years earlier when they both were performing stand-up.
"I really enjoyed his work, and he opened some tour dates for me, and we eventually collaborated on several unproduced screenplays together," Ansari wrote. "I loved Harris's writing. A lot of comedy writing is not very funny, especially to other comedy writers. People invariably pitch similar versions of the same joke. In a writers' room, a winning pitch is usually acknowledged with a chuckle that conveys 'I see why that would work comedically' rather than with boisterous laughter. Harris was a fantastic exception: His writing always made us laugh."