diff --git a/entrypoint.sh b/entrypoint.sh
index 235bc117..a7b636f0 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -3,7 +3,7 @@ set -eo pipefail
 
 if [ -z "$SSHPIPERD_SERVER_KEY" ]; then
     if [ ! -f /etc/ssh/ssh_host_ed25519_key ];then
-        ssh-keygen -t rsa -N '' -f /etc/ssh/ssh_host_ed25519_key
+        ssh-keygen -t ed25519 -N '' -f /etc/ssh/ssh_host_ed25519_key
     fi
 fi