diff --git a/flake.lock b/flake.lock
index 6119fb1..0622fe8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1697851979,
-        "narHash": "sha256-lJ8k4qkkwdvi+t/Xc6Fn74kUuobpu9ynPGxNZR6OwoA=",
+        "lastModified": 1700851152,
+        "narHash": "sha256-3PWITNJZyA3jz5IGREJRfSykM6xSLmD8u5A3WpBCyDM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5550a85a087c04ddcace7f892b0bdc9d8bb080c8",
+        "rev": "1216a5ba22a93a4a3a3bfdb4bff0f4727c576fcc",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 46bfb8f..8fcb711 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,296 +7,292 @@
     };
   };
 
-  outputs = { self, nixpkgs }@inputs:
-    let
-      system = "x86_64-linux";
-      pkgs = import nixpkgs {
-        inherit system;
-      };
-      py = pkgs.python3.override {
-        packageOverrides = final: prev: {
-          django = prev.django_4;
-          cronsim =
-            let
-              version = "2.5";
-              pname = "cronsim";
-              src = pkgs.fetchPypi {
-                inherit pname version;
-                hash = "sha256-FTzwIZ3MGgyp5xqDav22B5ZTfYxSHGhsenMTSDdXM78=";
-              };
-            in
-            prev.buildPythonPackage {
-              inherit pname version src;
-              # nativeCheckInputs = [ prev.pytestCheckHook ];
-              pythonImportsCheck = [
-                "cronsim"
-              ];
-            };
-        };
-      };
-      baseImage = {
-        tag = "latest";
-        maxLayers = 2;
-        contents = [
-          pkgs.bash
-          pkgs.coreutils-full
-        ];
-        config = {
-          User = "5000:5000";
-          Volumes = {
-            "/tmp" = { };
+  outputs = {
+    self,
+    nixpkgs,
+  } @ inputs: let
+    system = "x86_64-linux";
+    pkgs = import nixpkgs {
+      inherit system;
+    };
+    py = pkgs.python3.override {
+      packageOverrides = final: prev: {
+        django = prev.django_4;
+        cronsim = let
+          version = "2.5";
+          pname = "cronsim";
+          src = pkgs.fetchPypi {
+            inherit pname version;
+            hash = "sha256-FTzwIZ3MGgyp5xqDav22B5ZTfYxSHGhsenMTSDdXM78=";
           };
-          WorkingDir = "${self.packages.${system}.healthchecks}/app";
-          Env = [
-            "LANG=en_US.UTF-8"
-            "PYTHONPATH=${self.packages.${system}.healthchecks.pythonPath}"
-            "PYTHONUNBUFFERED=1"
-            "SSL_CERT_FILE=${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt"
-            "STATIC_ROOT=${self.packages.${system}.healthchecks.static}"
-          ];
-        };
-      };
-    in
-    {
-      packages.${system} = {
-        healthchecks =
-          let
-            pname = "healthchecks";
-            version = "3.0";
-            hash = "sha256-1xEWsNl1Gs+Xb5+KIZhnVrK4yT4CcVPfHEBP5EYQAD0=";
-            localSettings = pkgs.writeText "local_settings.py" ''
-              import os
-              CSRF_TRUSTED_HOSTS = os.getenv("CSRF_TRUSTED_HOSTS", "").split(",")
-              STATIC_ROOT = os.getenv("STATIC_ROOT")
-              STATICFILES_DIRS = [ ]
-              SECRET_KEY_FILE = os.getenv("SECRET_KEY_FILE")
-              if SECRET_KEY_FILE:
-                  with open(SECRET_KEY_FILE, "r") as file:
-                      SECRET_KEY = file.readline()
-            '';
-            propagatedBuildInputs = with py.pkgs; [
-              aiosmtpd
-              apprise
-              cron-descriptor
-              cronsim
-              django
-              django-compressor
-              django-stubs-ext
-              fido2
-              minio
-              psycopg2
-              pycurl
-              pydantic
-              pyotp
-              segno
-              statsd
-              whitenoise
+        in
+          prev.buildPythonPackage {
+            inherit pname version src;
+            # nativeCheckInputs = [ prev.pytestCheckHook ];
+            pythonImportsCheck = [
+              "cronsim"
             ];
-          in
-          py.pkgs.buildPythonApplication {
-            inherit pname version propagatedBuildInputs;
-            format = "other";
-
-            outputs = [ "out" "static" "doc" ];
-
-            src = pkgs.fetchFromGitHub {
-              owner = "healthchecks";
-              repo = pname;
-              rev = "v${version}";
-              inherit hash;
-            };
-
-            dontPatch = true;
-            dontConfigure = true;
-            dontBuild = true;
-            doCheck = false;
-
-            installPhase = ''
-              mkdir -p $out/app
-              cp -r CHANGELOG.md hc manage.py templates $out/app
-              chmod +x $out/app/manage.py
-
-              mkdir -p $doc
-              cp -r *.md LICENSE $doc
-
-              mkdir -p $static
-              DEBUG=False SECRET_KEY=build-key STATIC_ROOT=$static ${py}/bin/python ./manage.py collectstatic --noinput
-              DEBUG=False SECRET_KEY=build-key STATIC_ROOT=$static ${py}/bin/python ./manage.py compress
-              cp -r static-collected/* $static
-
-              cp ${localSettings} $out/app/hc/local_settings.py
-            '';
-
-            passthru = {
-              # PYTHONPATH of all dependencies used by the package
-              pythonPath = py.pkgs.makePythonPath propagatedBuildInputs;
-
-              tests = {
-                inherit (pkgs.nixosTests) healthchecks;
-              };
-            };
-
-            meta = with pkgs.lib; {
-              homepage = "https://github.com/healthchecks/healthchecks";
-              description = "A cron monitoring tool written in Python & Django ";
-              license = licenses.bsd3;
-            };
           };
-
-        smtpd = pkgs.dockerTools.buildLayeredImage (
-          pkgs.lib.attrsets.recursiveUpdate baseImage {
-            name = "healthchecks-smtpd";
-            config = {
-              Cmd = [
-                "${self.packages.${system}.healthchecks}/app/manage.py"
-                "smtpd"
-                "--port"
-                "2525"
-              ];
-              ExposedPorts = {
-                "2525/tcp" = { };
-              };
-            };
-          }
-        );
-
-        sendalerts = pkgs.dockerTools.buildLayeredImage (
-          pkgs.lib.attrsets.recursiveUpdate baseImage {
-            name = "healthchecks-sendalerts";
-            config = {
-              Cmd = [
-                "${self.packages.${system}.healthchecks}/app/manage.py"
-                "sendalerts"
-              ];
-              ExposedPorts = { };
-            };
-          }
-        );
-
-        sendreports = pkgs.dockerTools.buildLayeredImage (
-          pkgs.lib.attrsets.recursiveUpdate baseImage {
-            name = "healthchecks-sendreports";
-            config = {
-              Cmd = [
-                "${self.packages.${system}.healthchecks}/app/manage.py"
-                "sendreports"
-                "--loop"
-              ];
-              ExposedPorts = { };
-            };
-          }
-        );
-
-        maintenance =
-          let
-            script = pkgs.writeShellScript "maintenance" ''
-              CURL_OPTIONS="--fail --silent --show-error --max-time 10 --retry 5 --output /dev/null"
-              ${pkgs.curl}/bin/curl $CURL_OPTIONS http://webserver.healthchecks.svc/ping/$MAINTENANCE_CHECK_UUID/start
-              ${self.packages.${system}.healthchecks}/app/manage.py prunenotifications
-              ${self.packages.${system}.healthchecks}/app/manage.py pruneusers
-              ${self.packages.${system}.healthchecks}/app/manage.py prunetokenbucket
-              ${self.packages.${system}.healthchecks}/app/manage.py pruneflips
-              ${pkgs.curl}/bin/curl $CURL_OPTIONS http://webserver.healthchecks.svc/ping/$MAINTENANCE_CHECK_UUID
-            '';
-          in
-          pkgs.dockerTools.buildLayeredImage (
-            pkgs.lib.attrsets.recursiveUpdate baseImage {
-              name = "healthchecks-maintenance";
-              config = {
-                Cmd = [
-                  "${script}"
-                ];
-                ExposedPorts = { };
-              };
-            }
-          );
-
-        migrate = pkgs.dockerTools.buildLayeredImage (
-          pkgs.lib.attrsets.recursiveUpdate baseImage {
-            name = "healthchecks-migrate";
-            config = {
-              Cmd = [
-                "${self.packages.${system}.healthchecks}/app/manage.py"
-                "migrate"
-              ];
-              ExposedPorts = { };
-            };
-          }
-        );
-
-        webserver =
-          let
-            uwsgi = pkgs.uwsgi.override {
-              plugins = [ "python3" ];
-            };
-            uwsgi-ini = pkgs.writeTextFile {
-              name = "uwsgi.ini";
-              text = ''
-                [uwsgi]
-                buffer-size = 32768
-                chdir = ${self.packages.${system}.healthchecks}/app
-                die-on-term
-                disable-write-exception
-                enable-threads
-                harakiri = 10
-                http-socket = :8000
-                master
-                max-fd = 10000
-                mime-file = ${pkgs.mailcap}/etc/nginx/mime.types
-                module = hc.wsgi:application
-                plugins = python3
-                post-buffering = 16192
-                processes = 4
-                threads = 1
-                thunder-lock
-              '';
-            };
-          in
-          pkgs.dockerTools.buildLayeredImage (
-            pkgs.lib.attrsets.recursiveUpdate baseImage {
-              name = "healthchecks-webserver";
-              fakeRootCommands = '';
-                mkdir /tmp
-                chmod 0777 /tmp
-              '';
-              config = {
-                Cmd = [
-                  "${uwsgi}/bin/uwsgi"
-                  "${uwsgi-ini}"
-                ];
-                ExposedPorts = {
-                  "8000/tcp" = { };
-                };
-              };
-            }
-          );
-
-        static = pkgs.dockerTools.buildLayeredImage {
-          name = "healthchecks-static";
-          tag = "latest";
-          maxLayers = 2;
-          config = {
-            User = "5000:5000";
-            Cmd = [
-              "${pkgs.static-web-server}/bin/static-web-server"
-              "--port=8000"
-              "--root=${self.packages.${system}.healthchecks.static}"
-            ];
-            ExposedPorts = {
-              "8000/tcp" = { };
-            };
-          };
-        };
-
-      };
-      checks.${system} = {
-        webserver = self.packages.${system}.webserver;
-        smtpd = self.packages.${system}.smtpd;
-        sendalerts = self.packages.${system}.sendalerts;
-        sendreports = self.packages.${system}.sendreports;
-        maintenance = self.packages.${system}.maintenance;
-        migrate = self.packages.${system}.migrate;
-        static = self.packages.${system}.static;
       };
     };
+    baseImage = {
+      tag = "latest";
+      maxLayers = 2;
+      contents = [
+        pkgs.bash
+        pkgs.coreutils-full
+      ];
+      config = {
+        User = "5000:5000";
+        Volumes = {
+          "/tmp" = {};
+        };
+        WorkingDir = "${self.packages.${system}.healthchecks}/app";
+        Env = [
+          "LANG=en_US.UTF-8"
+          "PYTHONPATH=${self.packages.${system}.healthchecks.pythonPath}"
+          "PYTHONUNBUFFERED=1"
+          "SSL_CERT_FILE=${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt"
+          "STATIC_ROOT=${self.packages.${system}.healthchecks.static}"
+        ];
+      };
+    };
+  in {
+    packages.${system} = {
+      healthchecks = let
+        pname = "healthchecks";
+        version = "3.0.1";
+        hash = "sha256-r8wzIZPetnTEJDKPx/Oxk+gzs8gbjEHSi40LSxLb1Js=";
+        localSettings = pkgs.writeText "local_settings.py" ''
+          import os
+          CSRF_TRUSTED_HOSTS = os.getenv("CSRF_TRUSTED_HOSTS", "").split(",")
+          STATIC_ROOT = os.getenv("STATIC_ROOT")
+          STATICFILES_DIRS = [ ]
+          SECRET_KEY_FILE = os.getenv("SECRET_KEY_FILE")
+          if SECRET_KEY_FILE:
+              with open(SECRET_KEY_FILE, "r") as file:
+                  SECRET_KEY = file.readline()
+        '';
+        propagatedBuildInputs = with py.pkgs; [
+          aiosmtpd
+          apprise
+          cron-descriptor
+          cronsim
+          django
+          django-compressor
+          django-stubs-ext
+          fido2
+          minio
+          psycopg2
+          pycurl
+          pydantic
+          pyotp
+          segno
+          statsd
+          whitenoise
+        ];
+      in
+        py.pkgs.buildPythonApplication {
+          inherit pname version propagatedBuildInputs;
+          format = "other";
+
+          outputs = ["out" "static" "doc"];
+
+          src = pkgs.fetchFromGitHub {
+            owner = "healthchecks";
+            repo = pname;
+            rev = "v${version}";
+            inherit hash;
+          };
+
+          dontPatch = true;
+          dontConfigure = true;
+          dontBuild = true;
+          doCheck = false;
+
+          installPhase = ''
+            mkdir -p $out/app
+            cp -r CHANGELOG.md hc manage.py templates $out/app
+            chmod +x $out/app/manage.py
+
+            mkdir -p $doc
+            cp -r *.md LICENSE $doc
+
+            mkdir -p $static
+            DEBUG=False SECRET_KEY=build-key STATIC_ROOT=$static ${py}/bin/python ./manage.py collectstatic --noinput
+            DEBUG=False SECRET_KEY=build-key STATIC_ROOT=$static ${py}/bin/python ./manage.py compress
+            cp -r static-collected/* $static
+
+            cp ${localSettings} $out/app/hc/local_settings.py
+          '';
+
+          passthru = {
+            # PYTHONPATH of all dependencies used by the package
+            pythonPath = py.pkgs.makePythonPath propagatedBuildInputs;
+
+            tests = {
+              inherit (pkgs.nixosTests) healthchecks;
+            };
+          };
+
+          meta = with pkgs.lib; {
+            homepage = "https://github.com/healthchecks/healthchecks";
+            description = "A cron monitoring tool written in Python & Django ";
+            license = licenses.bsd3;
+          };
+        };
+
+      smtpd = pkgs.dockerTools.buildLayeredImage (
+        pkgs.lib.attrsets.recursiveUpdate baseImage {
+          name = "healthchecks-smtpd";
+          config = {
+            Cmd = [
+              "${self.packages.${system}.healthchecks}/app/manage.py"
+              "smtpd"
+              "--port"
+              "2525"
+            ];
+            ExposedPorts = {
+              "2525/tcp" = {};
+            };
+          };
+        }
+      );
+
+      sendalerts = pkgs.dockerTools.buildLayeredImage (
+        pkgs.lib.attrsets.recursiveUpdate baseImage {
+          name = "healthchecks-sendalerts";
+          config = {
+            Cmd = [
+              "${self.packages.${system}.healthchecks}/app/manage.py"
+              "sendalerts"
+            ];
+            ExposedPorts = {};
+          };
+        }
+      );
+
+      sendreports = pkgs.dockerTools.buildLayeredImage (
+        pkgs.lib.attrsets.recursiveUpdate baseImage {
+          name = "healthchecks-sendreports";
+          config = {
+            Cmd = [
+              "${self.packages.${system}.healthchecks}/app/manage.py"
+              "sendreports"
+              "--loop"
+            ];
+            ExposedPorts = {};
+          };
+        }
+      );
+
+      maintenance = let
+        script = pkgs.writeShellScript "maintenance" ''
+          CURL_OPTIONS="--fail --silent --show-error --max-time 10 --retry 5 --output /dev/null"
+          ${pkgs.curl}/bin/curl $CURL_OPTIONS http://webserver.healthchecks.svc/ping/$MAINTENANCE_CHECK_UUID/start
+          ${self.packages.${system}.healthchecks}/app/manage.py prunenotifications
+          ${self.packages.${system}.healthchecks}/app/manage.py pruneusers
+          ${self.packages.${system}.healthchecks}/app/manage.py prunetokenbucket
+          ${self.packages.${system}.healthchecks}/app/manage.py pruneflips
+          ${pkgs.curl}/bin/curl $CURL_OPTIONS http://webserver.healthchecks.svc/ping/$MAINTENANCE_CHECK_UUID
+        '';
+      in
+        pkgs.dockerTools.buildLayeredImage (
+          pkgs.lib.attrsets.recursiveUpdate baseImage {
+            name = "healthchecks-maintenance";
+            config = {
+              Cmd = [
+                "${script}"
+              ];
+              ExposedPorts = {};
+            };
+          }
+        );
+
+      migrate = pkgs.dockerTools.buildLayeredImage (
+        pkgs.lib.attrsets.recursiveUpdate baseImage {
+          name = "healthchecks-migrate";
+          config = {
+            Cmd = [
+              "${self.packages.${system}.healthchecks}/app/manage.py"
+              "migrate"
+            ];
+            ExposedPorts = {};
+          };
+        }
+      );
+
+      webserver = let
+        uwsgi = pkgs.uwsgi.override {
+          plugins = ["python3"];
+        };
+        uwsgi-ini = pkgs.writeTextFile {
+          name = "uwsgi.ini";
+          text = ''
+            [uwsgi]
+            buffer-size = 32768
+            chdir = ${self.packages.${system}.healthchecks}/app
+            die-on-term
+            disable-write-exception
+            enable-threads
+            harakiri = 10
+            http-socket = :8000
+            master
+            max-fd = 10000
+            mime-file = ${pkgs.mailcap}/etc/nginx/mime.types
+            module = hc.wsgi:application
+            plugins = python3
+            post-buffering = 16192
+            processes = 4
+            threads = 1
+            thunder-lock
+          '';
+        };
+      in
+        pkgs.dockerTools.buildLayeredImage (
+          pkgs.lib.attrsets.recursiveUpdate baseImage {
+            name = "healthchecks-webserver";
+            fakeRootCommands = ''              ;
+                              mkdir /tmp
+                              chmod 0777 /tmp
+            '';
+            config = {
+              Cmd = [
+                "${uwsgi}/bin/uwsgi"
+                "${uwsgi-ini}"
+              ];
+              ExposedPorts = {
+                "8000/tcp" = {};
+              };
+            };
+          }
+        );
+
+      static = pkgs.dockerTools.buildLayeredImage {
+        name = "healthchecks-static";
+        tag = "latest";
+        maxLayers = 2;
+        config = {
+          User = "5000:5000";
+          Cmd = [
+            "${pkgs.static-web-server}/bin/static-web-server"
+            "--port=8000"
+            "--root=${self.packages.${system}.healthchecks.static}"
+          ];
+          ExposedPorts = {
+            "8000/tcp" = {};
+          };
+        };
+      };
+    };
+    checks.${system} = {
+      webserver = self.packages.${system}.webserver;
+      smtpd = self.packages.${system}.smtpd;
+      sendalerts = self.packages.${system}.sendalerts;
+      sendreports = self.packages.${system}.sendreports;
+      maintenance = self.packages.${system}.maintenance;
+      migrate = self.packages.${system}.migrate;
+      static = self.packages.${system}.static;
+    };
+  };
 }