diff --git a/artiq-fast.nix b/artiq-fast.nix
index 5d99b8f..ce84d16 100644
--- a/artiq-fast.nix
+++ b/artiq-fast.nix
@@ -75,7 +75,7 @@ in
       mkdir $HOME/.ssh
       cp /opt/hydra_id_rsa $HOME/.ssh/id_rsa
       cp /opt/hydra_id_rsa.pub $HOME/.ssh/id_rsa.pub
-      echo "rpi-1 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFaIIQlc+fknFZSSLSfuMcfi6IhtMDNS15DJQSAb/O/h" > $HOME/.ssh/known_hosts
+      echo "rpi-1 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPOBQVcsvk6WgRj18v4m0zkFeKrcN9gA+r6sxQxNwFpv" > $HOME/.ssh/known_hosts
       chmod 600 $HOME/.ssh/id_rsa
       LOCKCTL=$(mktemp -d)
       mkfifo $LOCKCTL/lockctl