The 100th episode of The Walking Dead is set to premiere this season, and it’s been a long time coming. As People magazine points out, Chandler Riggs — who started the show at 10-years-old — is now 18. “100 frickin’ episodes is magnificent,” said Norman Reedus.

The cast of the show sent a big thank you to fans to commemorate the milestone. “My knees hurt. I’ve gone gray,” Andrew Lincoln jokes. “It’s an incredible ride and I want to thank you all for being a part of it,” he adds.

Watch the video below!