diff --git a/ops/nixos/rexxar/default.nix b/ops/nixos/rexxar/default.nix
index 0ae95341db..6541597d40 100644
--- a/ops/nixos/rexxar/default.nix
+++ b/ops/nixos/rexxar/default.nix
@@ -434,6 +434,9 @@
     };
     filer = {
       enable = true;
+      earlyOptions = {
+        v = 4;
+      };
       options = {
         port = 21010;
         ip = "rexxar.int.as205479.net";
@@ -464,6 +467,9 @@
     };
     volume = {
       enable = true;
+      earlyOptions = {
+        v = 4;
+      };
       options = {
         port = 21100;
         ip = "rexxar.int.as205479.net";