diff --git a/flake.lock b/flake.lock
index fcf19c8..756fecc 100644
--- a/flake.lock
+++ b/flake.lock
@@ -32,6 +32,54 @@
         "type": "github"
       }
     },
+    "git-hooks": {
+      "inputs": {
+        "flake-compat": [
+          "simple-nixos-mailserver",
+          "flake-compat"
+        ],
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "simple-nixos-mailserver",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1749636823,
+        "narHash": "sha256-WUaIlOlPLyPgz9be7fqWJA5iG6rHcGRtLERSCfUDne4=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "623c56286de5a3193aa38891a6991b28f9bab056",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "simple-nixos-mailserver",
+          "git-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "nixlib": {
       "locked": {
         "lastModified": 1736643958,
@@ -70,33 +118,34 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1749866762,
-        "narHash": "sha256-WWUjx/6D+xmE6boM31L31nM/8csI79BuLgGytZHByz4=",
+        "lastModified": 1749882819,
+        "narHash": "sha256-cKo4Kczm4e7IY1fix2Tj9Kn+UUHVR1Goy42mz2hUGng=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "6a06b272523a606c55f7bac29477a091c775d89b",
+        "rev": "db926a14a923e4b14d474577efac0b6d93900941",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-24.11-small",
+        "ref": "nixos-25.05-small",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
-    "nixpkgs-24_05": {
+    "nixpkgs-25_05": {
       "locked": {
-        "lastModified": 1717144377,
-        "narHash": "sha256-F/TKWETwB5RaR8owkPPi+SPJh83AQsm6KrQAlJ8v/uA=",
+        "lastModified": 1749727998,
+        "narHash": "sha256-mHv/yeUbmL91/TvV95p+mBVahm9mdQMJoqaTVTALaFw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "805a384895c696f802a9bf5bf4720f37385df547",
+        "rev": "fd487183437963a59ba763c0cc4f27e3447dd6dd",
         "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-24.05",
-        "type": "indirect"
+        "owner": "NixOS",
+        "ref": "nixos-25.05",
+        "repo": "nixpkgs",
+        "type": "github"
       }
     },
     "nixpkgs-master": {
@@ -133,17 +182,18 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1717602782,
-        "narHash": "sha256-pL9jeus5QpX5R+9rsp3hhZ+uplVHscNJh8n8VpqscM0=",
+        "lastModified": 1749794982,
+        "narHash": "sha256-Kh9K4taXbVuaLC0IL+9HcfvxsSUx8dPB5s5weJcc9pc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e8057b67ebf307f01bdcc8fba94d94f75039d1f6",
+        "rev": "ee930f9755f58096ac6e8ca94a1887e0534e2d81",
         "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
+        "owner": "NixOS",
         "ref": "nixos-unstable",
-        "type": "indirect"
+        "repo": "nixpkgs",
+        "type": "github"
       }
     },
     "root": {
@@ -159,57 +209,24 @@
       "inputs": {
         "blobs": "blobs",
         "flake-compat": "flake-compat",
+        "git-hooks": "git-hooks",
         "nixpkgs": "nixpkgs_2",
-        "nixpkgs-24_05": "nixpkgs-24_05",
-        "utils": "utils"
+        "nixpkgs-25_05": "nixpkgs-25_05"
       },
       "locked": {
-        "lastModified": 1734885828,
-        "narHash": "sha256-G0fB1YBlkalu8lLGRB07K8CpUWNVd+unfrjNomSL7SM=",
+        "lastModified": 1747965231,
+        "narHash": "sha256-BW3ktviEhfCN/z3+kEyzpDKAI8qFTwO7+S0NVA0C90o=",
         "owner": "simple-nixos-mailserver",
         "repo": "nixos-mailserver",
-        "rev": "636b82f4175e3f6b1e80d2189bb0469e2ae01a55",
+        "rev": "53007af63fade28853408370c4c600a63dd97f41",
         "type": "gitlab"
       },
       "original": {
         "owner": "simple-nixos-mailserver",
-        "ref": "nixos-24.05",
+        "ref": "nixos-25.05",
         "repo": "nixos-mailserver",
         "type": "gitlab"
       }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    },
-    "utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1709126324,
-        "narHash": "sha256-q6EQdSeUZOG26WelxqkmR7kArjgWCdw5sfJVHPH/7j8=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "d465f4819400de7c8d874d50b982301f28a84605",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index e5a6b25..a2a822f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,13 +1,13 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11-small";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05-small";
     nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable-small";
     nixpkgs-master.url = "github:NixOS/nixpkgs/master";
     nixos-generators = {
       url = "github:nix-community/nixos-generators";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    simple-nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-24.05";
+    simple-nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-25.05";
   };
 
   outputs = { self, nixpkgs, nixpkgs-unstable, nixpkgs-master, nixos-generators, simple-nixos-mailserver, ... }@inputs: