diff --git a/nixos/modules/services/enthalpy/ipsec.nix b/nixos/modules/services/enthalpy/ipsec.nix
index e5ac57e..5ec45bd 100644
--- a/nixos/modules/services/enthalpy/ipsec.nix
+++ b/nixos/modules/services/enthalpy/ipsec.nix
@@ -124,6 +124,7 @@ in
           interfaces_use = ${strings.concatStringsSep "," cfg.ipsec.interfaces}
           port = 0
           port_nat_t = ${toString config.networking.ports.enthalpy-ipsec}
+          retransmit_timeout = 30
           retransmit_base = 1
           plugins {
             socket-default {