diff --git a/nix/os/devices/vmd32387.contaboserver.net/versions.nix b/nix/os/devices/vmd32387.contaboserver.net/versions.nix
index b921921..ee8fc44 100644
--- a/nix/os/devices/vmd32387.contaboserver.net/versions.nix
+++ b/nix/os/devices/vmd32387.contaboserver.net/versions.nix
@@ -1,47 +1,24 @@
 let
   nixpkgs = {
     url = "https://github.com/NixOS/nixpkgs/";
-    ref = "nixos-21.11";
-    rev = "e34c5379866833f41e2a36f309912fa675d687c7";
+    ref = "nixos-22.05";
+    rev = ''
+      b3a8f7ed267e0a7ed100eb7d716c9137ff120fe3'';
   };
 
 in {
   inherit nixpkgs;
-  nixos = nixpkgs // { suffix = "/nixos"; };
   "channels-nixos-stable" = nixpkgs;
-  "channels-nixos-21.05" = {
-    url = "https://github.com/NixOS/nixpkgs/";
-    ref = "nixos-21.05";
-    rev = "";
-  };
-  "channels-nixos-20.09" = {
-    url = "https://github.com/NixOS/nixpkgs/";
-    ref = "nixos-20.09";
-    rev = "1c1f5649bb9c1b0d98637c8c365228f57126f361";
-  };
-  "channels-nixos-20.03" = {
-    url = "https://github.com/NixOS/nixpkgs/";
-    ref = "nixos-20.03";
-    rev = "1db42b7fe3878f3f5f7a4f2dc210772fd080e205";
-  };
-  "channels-nixos-19.09" = {
-    url = "https://github.com/NixOS/nixpkgs/";
-    ref = "nixos-19.09";
-    rev = "75f4ba05c63be3f147bcc2f7bd4ba1f029cedcb1";
-  };
-  "channels-nixos-unstable" = {
-    url = "https://github.com/NixOS/nixpkgs/";
-    ref = "nixos-unstable";
-    rev = "c71f061c68ba8ce53471b767d5049cbd0f3d8490";
-  };
   "nixpkgs-master" = {
     url = "https://github.com/NixOS/nixpkgs/";
     ref = "master";
-    rev = "cdaa4ce25b74ed006b110e2a635eade0e3f18980";
+    rev = ''
+      6b10854c8194f1ebaa5bce623e71c6da1c008861'';
   };
   "home-manager-module" = {
     url = "https://github.com/nix-community/home-manager";
-    ref = "release-21.05";
-    rev = "7329ffc6e911106494183557fc249180d5422929";
+    ref = "release-22.05";
+    rev = ''
+      f0ecd4b1db5e15103e955b18cb94bea4296e5c45'';
   };
 }