diff --git a/configuration/nginx/default.nix b/configuration/nginx/default.nix
index dab0259..2ef1527 100644
--- a/configuration/nginx/default.nix
+++ b/configuration/nginx/default.nix
@@ -1,4 +1,9 @@
-{ lib, ... }:
+{
+  flake-inputs,
+  pkgs,
+  lib,
+  ...
+}:
 {
   imports = [
     ./logging.nix
@@ -10,13 +15,64 @@
     description = "The base domain name to append to virtual domain names";
   };
 
-  config.services.nginx = {
-    enable = true;
-    recommendedTlsSettings = true;
-    recommendedOptimisation = true;
-    recommendedGzipSettings = true;
-    recommendedProxySettings = true;
-    clientMaxBodySize = "10G";
-    statusPage = true; # For metrics, should be accessible only from localhost
+  config = {
+    services.nginx = {
+      enable = true;
+      recommendedTlsSettings = true;
+      recommendedOptimisation = true;
+      recommendedGzipSettings = true;
+      recommendedProxySettings = true;
+      clientMaxBodySize = "10G";
+      statusPage = true; # For metrics, should be accessible only from localhost
+    };
+
+    serviceTests =
+      let
+        testHostConfig =
+          { config, ... }:
+          {
+            _module.args = { inherit flake-inputs; };
+            imports = [
+              ./.
+              ../../modules/serviceTests/mocks.nix
+              flake-inputs.sops-nix.nixosModules.sops
+            ];
+
+            services.nginx = {
+              domain = "testHost";
+
+              virtualHosts."${config.services.nginx.domain}" = {
+                useACMEHost = "tlater.net";
+                forceSSL = true;
+                enableHSTS = true;
+                locations."/".return = "200 ok";
+              };
+            };
+          };
+      in
+      {
+        hstsIsSet = pkgs.testers.runNixOSTest {
+          name = "assert-hsts";
+          nodes = {
+            testHost = testHostConfig;
+
+            client =
+              { pkgs, ... }:
+              {
+                environment.systemPackages = [ pkgs.curl ];
+              };
+          };
+
+          testScript = ''
+            start_all()
+
+            testHost.wait_for_unit("nginx")
+            testHost.succeed("systemctl start network-online.target")
+            testHost.wait_for_unit("network-online.target")
+
+            client.succeed("curl http://testHost")
+          '';
+        };
+      };
   };
 }
diff --git a/configuration/nginx/ssl.nix b/configuration/nginx/ssl.nix
index 4cea508..7abc38e 100644
--- a/configuration/nginx/ssl.nix
+++ b/configuration/nginx/ssl.nix
@@ -64,5 +64,10 @@
         in
         ''${pkgs.runtimeShell} -c '${confirm}' '';
     };
+
+    sops.secrets = {
+      "porkbun/api-key".owner = "acme";
+      "porkbun/secret-api-key".owner = "acme";
+    };
   };
 }
diff --git a/configuration/services/backups.nix b/configuration/services/backups.nix
index 688f5f9..0ae8abf 100644
--- a/configuration/services/backups.nix
+++ b/configuration/services/backups.nix
@@ -265,5 +265,18 @@ in
       };
       groups.backup = { };
     };
+
+    sops.secrets = {
+      "restic/storagebox-backups" = {
+        owner = "root";
+        group = "backup";
+        mode = "0440";
+      };
+      "restic/storagebox-ssh-key" = {
+        owner = "backup";
+        group = "backup";
+        mode = "0040";
+      };
+    };
   };
 }
diff --git a/configuration/sops.nix b/configuration/sops.nix
index 0337438..a5b19f6 100644
--- a/configuration/sops.nix
+++ b/configuration/sops.nix
@@ -38,30 +38,12 @@
         group = "nextcloud";
       };
 
-      # Porkbub/ACME
-      "porkbun/api-key" = {
-        owner = "acme";
-      };
-      "porkbun/secret-api-key" = {
-        owner = "acme";
-      };
-
       # Restic
       "restic/local-backups" = {
         owner = "root";
         group = "backup";
         mode = "0440";
       };
-      "restic/storagebox-backups" = {
-        owner = "root";
-        group = "backup";
-        mode = "0440";
-      };
-      "restic/storagebox-ssh-key" = {
-        owner = "backup";
-        group = "backup";
-        mode = "0040";
-      };
 
       # Steam
       "steam/tlater" = { };
diff --git a/flake.lock b/flake.lock
index 705d87c..ad4903f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -136,11 +136,11 @@
         "pyproject-nix": "pyproject-nix"
       },
       "locked": {
-        "lastModified": 1754978539,
-        "narHash": "sha256-nrDovydywSKRbWim9Ynmgj8SBm8LK3DI2WuhIqzOHYI=",
+        "lastModified": 1763413832,
+        "narHash": "sha256-dkqBwDXiv8MPoFyIvOuC4bVubAP+TlVZUkVMB78TTSg=",
         "owner": "nix-community",
         "repo": "dream2nix",
-        "rev": "fbec3263cb4895ac86ee9506cdc4e6919a1a2214",
+        "rev": "5658fba3a0b6b7d5cb0460b949651f64f644a743",
         "type": "github"
       },
       "original": {
@@ -356,11 +356,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1762868777,
-        "narHash": "sha256-QqS72GvguP56oKDNUckWUPNJHjsdeuXh5RyoKz0wJ+E=",
+        "lastModified": 1763319842,
+        "narHash": "sha256-YG19IyrTdnVn0l3DvcUYm85u3PaqBt6tI6VvolcuHnA=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "c5c3147730384576196fb5da048a6e45dee10d56",
+        "rev": "7275fa67fbbb75891c16d9dee7d88e58aea2d761",
         "type": "github"
       },
       "original": {
diff --git a/modules/default.nix b/modules/default.nix
index 70f35b0..1bf5314 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -1,6 +1,6 @@
 {
   imports = [
     ./crowdsec
-    ./serviceTests.nix
+    ./serviceTests/stub.nix
   ];
 }
diff --git a/modules/serviceTests/mocks.nix b/modules/serviceTests/mocks.nix
new file mode 100644
index 0000000..6d7be84
--- /dev/null
+++ b/modules/serviceTests/mocks.nix
@@ -0,0 +1,27 @@
+/**
+  Module containing mock definitions for service test runners.
+*/
+{ lib, ... }:
+{
+  imports = [
+    ../.
+    ../../configuration/services/backups.nix
+  ];
+  # imports = [ flake-inputs.sops-nix.nixosModules.sops ];
+
+  sops.defaultSopsFile = ../../keys/staging.yaml;
+  environment.etc."staging.key" = {
+    mode = "0400";
+    source = ../../keys/hosts/staging.key;
+  };
+  services.openssh = {
+    enable = true;
+    hostKeys = lib.mkForce [
+      {
+        type = "rsa";
+        bits = 4096;
+        path = "/etc/staging.key";
+      }
+    ];
+  };
+}
diff --git a/modules/serviceTests.nix b/modules/serviceTests/stub.nix
similarity index 100%
rename from modules/serviceTests.nix
rename to modules/serviceTests/stub.nix