diff --git a/nixos/modules/services/networking/mullvad-vpn.nix b/nixos/modules/services/networking/mullvad-vpn.nix
index d9e6e57c92cc..6f595ca4be2b 100644
--- a/nixos/modules/services/networking/mullvad-vpn.nix
+++ b/nixos/modules/services/networking/mullvad-vpn.nix
@@ -15,6 +15,9 @@ with lib;
   config = mkIf cfg.enable {
     boot.kernelModules = [ "tun" ];
 
+    # mullvad-daemon writes to /etc/iproute2/rt_tables
+    networking.iproute2.enable = true;
+
     systemd.services.mullvad-daemon = {
       description = "Mullvad VPN daemon";
       wantedBy = [ "multi-user.target" ];