diff --git a/modules/k3s/images/rsshfs-client.nix b/modules/k3s/images/rsshfs-client.nix
index fd1d46b..8b2b54d 100644
--- a/modules/k3s/images/rsshfs-client.nix
+++ b/modules/k3s/images/rsshfs-client.nix
@@ -118,6 +118,7 @@ let
     X11Forwarding no
 
     HostKey /tmp/ssh_host_ed25519_key
+    Subsystem sftp internal-sftp
   '';
 in
 pkgs.dockerTools.buildLayeredImage {