diff --git a/hosts/vno1-oh2/configuration.nix b/hosts/vno1-oh2/configuration.nix
index 7f3eb2b..3775880 100644
--- a/hosts/vno1-oh2/configuration.nix
+++ b/hosts/vno1-oh2/configuration.nix
@@ -43,6 +43,7 @@
       zfsborg = {
         enable = true;
         passwordPath = config.age.secrets.borgbackup-password.path;
+        sshKeyPath = "/etc/ssh/ssh_host_ed25519_key";
         mountpoints = {
           "/home" = {
             repo = "zh2769@zh2769.rsync.net:${config.networking.hostName}.${config.networking.domain}-home-motiejus-annex2";
diff --git a/modules/base/zfsborg/default.nix b/modules/base/zfsborg/default.nix
index 763281a..1772e9a 100644
--- a/modules/base/zfsborg/default.nix
+++ b/modules/base/zfsborg/default.nix
@@ -19,6 +19,7 @@ in {
     enable = lib.mkEnableOption "backup zfs snapshots with borg";
 
     passwordPath = lib.mkOption {type = str;};
+    sshKeyPath = lib.mkOption {type = nullOr path; default = null;};
 
     mountpoints = lib.mkOption {
       default = {};
@@ -86,6 +87,8 @@ in {
           }
           // lib.optionalAttrs (attrs ? patterns) {
             patterns = attrs.patterns;
+          } // lib.optionalAttrs (config.mj.base.zfsborg.sshKeyPath != null) {
+            environment.BORG_RSH = ''ssh -i "${config.mj.base.zfsborg.sshKeyPath}"'';
           };
       })
     config.mj.base.zfsborg.mountpoints;