Lea Michele, Glee Costars Remember Cory Monteith on Anniversary of His Death
07/13/2014 AT 04:30 PM EDT
Monteith was found dead July 13, 2013, after overdosing on heroin and alcohol in his Vancouver hotel room. He was 31.
On Sunday, on- and off-screen girlfriend Lea Michele posted photos in the late actor’s honor.
"We hold you in our hearts today, and every day we remember your smile. We will love you and miss you always," she wrote on Twitter in a message retweeted by Chris Colfer.
The show's cast (including Matthew Morrison, Amber Riley and Jenna Ushkowitz) and creator Ryan Murphy are all remembering Monteith through Instagram pictures and Tweets.
See their tributes below: