diff --git a/public/service-hydra-core.nix b/public/service-hydra-core.nix
index d76c55e..af4e999 100644
--- a/public/service-hydra-core.nix
+++ b/public/service-hydra-core.nix
@@ -73,6 +73,7 @@ mkIf cfg.hydra-core {
   ### Machines connues
 
   programs.ssh.knownHosts = {
+    "hydra.prunetwork.fr".publicKey     = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMhXFlj2oyArVyEwEwDxNXthB/JljHkq+UhTLxbekkMB";
     "monstre.dubronetwork.fr".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBTTrLhq1Cwm0rpnwEIxSLqVrJWZnt+/9dt+SKd8NiIc";
     "pedro.dubronetwork.fr".publicKey   = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIM7fjo2ysLqlfSo6BKnc6I6m1ayoPrbwEEyTKZmUzsOD";
     "ocean.prunetwork.fr".publicKey     = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINCaRuTl8iCTUE4XInOpkSlwQj5Re4w4Iq+gNIlJe8pA";