Anupam shared a snippet of Willem's video in which he says: "Anupam congratulations. 500 films, incredible. It was a pleasure working with you. Good luck. Celebrate."
They worked together in The Headhunter's Calling.
Anupam also Instagrammed a picture of himself with Willem and his wife Giada Colagrande.
The 61-year-old will be seen sharing screen space with Holly Hunter, Ray Romano, Zoe Kazan and Kumail Nanjiani in The Big Sick.