diff --git a/nixos/modules/security/acme.nix b/nixos/modules/security/acme.nix
index 1a2b8779e00..12736e57b4a 100644
--- a/nixos/modules/security/acme.nix
+++ b/nixos/modules/security/acme.nix
@@ -282,6 +282,7 @@ in
           timerConfig = {
             OnCalendar = cfg.renewInterval;
             Unit = "acme-${cert}.service";
+            Persistent = "yes";
           };
         })
       );