07/13/2014 at 03:00 PM EDT
One year after Cory Monteith
's tragic death, his Glee
costars are sharing memories of their friend over social media.
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: