diff --git a/i2samp.sh b/i2samp.sh
index 0589501..fb0e42a 100755
--- a/i2samp.sh
+++ b/i2samp.sh
@@ -228,6 +228,8 @@ raspbian_check() {
     if [ -f /etc/os-release ]; then
         if cat /etc/os-release | grep "/sid" > /dev/null; then
             IS_SUPPORTED=false && IS_EXPERIMENTAL=true
+        elif cat /etc/os-release | grep "bullseye" > /dev/null; then
+            IS_SUPPORTED=false && IS_EXPERIMENTAL=true
         elif cat /etc/os-release | grep "buster" > /dev/null; then
             IS_SUPPORTED=false && IS_EXPERIMENTAL=true
         elif cat /etc/os-release | grep "stretch" > /dev/null; then