diff --git a/global/fs/zfs/default.nix b/global/fs/zfs/default.nix
index 70520af2..99e4f59c 100644
--- a/global/fs/zfs/default.nix
+++ b/global/fs/zfs/default.nix
@@ -50,6 +50,11 @@ in {
         type = with types; str;
         description = "remote host as replication destination";
       };
+      port = mkOption {
+        type = with types; port;
+        description = "ssh port of replication target";
+        default = 22;
+      };
       datasets = mkOption {
         type = with types; listOf str;
         default = [ "persist" "service" "storage" ];
diff --git a/global/fs/zfs/replication.nix b/global/fs/zfs/replication.nix
index c8f58b44..f2edba41 100644
--- a/global/fs/zfs/replication.nix
+++ b/global/fs/zfs/replication.nix
@@ -11,6 +11,7 @@ in mkIf cfg.enable {
     commonArgs = [
       "--recursive"
       "--mbuffer-size=128M"
+      "--sshport=${toString cfg.port}"
     ];
     localSourceAllow = mkOptionDefault [ "mount" ];