diff --git a/modules/nixos/services/nginx/default.nix b/modules/nixos/services/nginx/default.nix
index 3bba9f4..ab69efd 100644
--- a/modules/nixos/services/nginx/default.nix
+++ b/modules/nixos/services/nginx/default.nix
@@ -486,5 +486,9 @@ in
         }
       ];
     };
+
+    my.system.persist.directories = [
+      "/var/lib/acme"
+    ];
   };
 }