diff --git a/lib/fudo/initrd-network.nix b/lib/fudo/initrd-network.nix
index 329ba50..0c41a53 100644
--- a/lib/fudo/initrd-network.nix
+++ b/lib/fudo/initrd-network.nix
@@ -16,6 +16,8 @@ let
 
     phases = [ "installPhase" ];
 
+    buildInputs = with pkgs; [ openssh ];
+
     installPhase = ''
       mkdir $out
       ssh-keygen -r REMOVEME -f "${pubkey-file}" | sed 's/^REMOVEME IN SSHFP //' >> $out/initrd-ssh-pubkey.sshfp