In the wake of the fatal shooting at a Texas elementary school on Tuesday, which resulted in 21 deaths, Netflix added a last-minute disclaimer to its upcoming fourth season that warns viewers of potentially disturbing content in its first scene, according to The Hollywood Reporter. The warning specifically cited the opening scene of the first episode.

“We filmed this season of Stranger Things a year ago,” the warning read, per The Hollywood Reporter. “But given the recent tragic shooting at a school in Texas, viewers may find the opening scene of episode 1 distressing. We are deeply saddened by this unspeakable violence, and our hearts go out to every family mourning a loved one.

Tuesday’s shooting in Uvalde, Texas marked the country’s deadliest school shooting since Sandy Hook Elementary’s 2012 shooting. The 18-year-old gunman killed 19 children and two teachers before being shot and killed by officers an hour later, although a solid timeline is still developing.

The shooting also led to CBS pulling the FBI season finale Tuesday, which dealt with a storyline centering around a student’s potential involvement in a fatal robbery. In the days since the Texas shooting, the ongoing conversation about stricter gun control laws across the country has been brought to a forefront, with Democrats urging lawmakers to act on halted legislation that they believe could have prevented acts of violence such as the Uvalde shooting and the supermarket shooting in Buffalo, New York that took place just 10 days before.

Still, Stranger Things will premiere on Netflix as planned. “Volume 1” will launch May 27, while the second half will debut July 1. The trailer can be watched below.