diff --git a/tasks/install_shell.sh b/tasks/install_shell.sh
index 4e7df662..e307ae66 100644
--- a/tasks/install_shell.sh
+++ b/tasks/install_shell.sh
@@ -636,6 +636,7 @@ case $platform in
     case $major_version in
       "3")  deb_codename="stretch";;
       "4")  deb_codename="buster";;
+      "5") deb_codename="bullseye";;
       "21") deb_codename="jammy";;
       "20") deb_codename="focal";;
       "19") deb_codename="bionic";;