diff --git a/flake.lock b/flake.lock
index 28cb149..84e3884 100644
--- a/flake.lock
+++ b/flake.lock
@@ -360,21 +360,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-23_05": {
-      "locked": {
-        "lastModified": 1704290814,
-        "narHash": "sha256-LWvKHp7kGxk/GEtlrGYV68qIvPHkU9iToomNFGagixU=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "70bdadeb94ffc8806c0570eb5c2695ad29f0e421",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-23.05",
-        "type": "indirect"
-      }
-    },
     "nixpkgs-lib": {
       "locked": {
         "lastModified": 1717284937,
@@ -387,21 +372,6 @@
         "url": "https://github.com/NixOS/nixpkgs/archive/eb9ceca17df2ea50a250b6b27f7bf6ab0186f198.tar.gz"
       }
     },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1705856552,
-        "narHash": "sha256-JXfnuEf5Yd6bhMs/uvM67/joxYKoysyE3M2k6T3eWbg=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "612f97239e2cc474c13c9dafa0df378058c5ad8d",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-unstable",
-        "type": "indirect"
-      }
-    },
     "root": {
       "inputs": {
         "agenix": "agenix",
@@ -425,24 +395,25 @@
       "inputs": {
         "blobs": "blobs",
         "flake-compat": "flake-compat_2",
-        "nixpkgs": "nixpkgs_2",
-        "nixpkgs-23_05": "nixpkgs-23_05",
-        "nixpkgs-23_11": [
+        "nixpkgs": [
+          "unstable"
+        ],
+        "nixpkgs-24_05": [
           "nixpkgs"
         ],
         "utils": "utils_2"
       },
       "locked": {
-        "lastModified": 1706219574,
-        "narHash": "sha256-qO+8UErk+bXCq2ybHU4GzXG4Ejk4Tk0rnnTPNyypW4g=",
+        "lastModified": 1718084203,
+        "narHash": "sha256-Cx1xoVfSMv1XDLgKg08CUd1EoTYWB45VmB9XIQzhmzI=",
         "owner": "simple-nixos-mailserver",
         "repo": "nixos-mailserver",
-        "rev": "e47f3719f1db3e0961a4358d4cb234a0acaa7baf",
+        "rev": "29916981e7b3b5782dc5085ad18490113f8ff63b",
         "type": "gitlab"
       },
       "original": {
         "owner": "simple-nixos-mailserver",
-        "ref": "nixos-23.11",
+        "ref": "nixos-24.05",
         "repo": "nixos-mailserver",
         "type": "gitlab"
       }
diff --git a/flake.nix b/flake.nix
index ccff813..b5473e1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -39,8 +39,9 @@
     element-stickers.inputs.maunium-stickerpicker.follows = "maunium-stickerpicker";
     element-stickers.inputs.nixpkgs.follows = "nixpkgs";
 
-    simple-nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-23.11";
-    simple-nixos-mailserver.inputs.nixpkgs-23_11.follows = "nixpkgs";
+    simple-nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-24.05";
+    simple-nixos-mailserver.inputs.nixpkgs-24_05.follows = "nixpkgs";
+    simple-nixos-mailserver.inputs.nixpkgs.follows = "unstable";
   };
 
   outputs =