diff --git a/nix/os/devices/srv0.home-ch.stefanjunker.de/versions.nix b/nix/os/devices/srv0.home-ch.stefanjunker.de/versions.nix
index f29fb73..59b2287 100644
--- a/nix/os/devices/srv0.home-ch.stefanjunker.de/versions.nix
+++ b/nix/os/devices/srv0.home-ch.stefanjunker.de/versions.nix
@@ -1,8 +1,8 @@
 let
   nixpkgs = {
     url = "https://github.com/NixOS/nixpkgs/";
-    ref = "nixos-21.05";
-    rev = "a1007637cea374bd1bafd754cfd5388894c49129";
+    ref = "nixos-21.11";
+    rev = "e34c5379866833f41e2a36f309912fa675d687c7";
   };
 in
 
@@ -12,7 +12,7 @@ in
   "channels-nixos-21.05" = {
     url = "https://github.com/NixOS/nixpkgs/";
     ref = "nixos-21.05";
-    rev = "a1007637cea374bd1bafd754cfd5388894c49129";
+    rev = "b86b6bc5e753919ab4d7c902210234f324d0efa4";
   };
   "channels-nixos-20.03" = {
     url = "https://github.com/NixOS/nixpkgs/";
@@ -27,16 +27,16 @@ in
   "channels-nixos-unstable" = {
     url = "https://github.com/NixOS/nixpkgs/";
     ref = "nixos-unstable";
-    rev = "253aecf69ed7595aaefabde779aa6449195bebb7";
+    rev = "c71f061c68ba8ce53471b767d5049cbd0f3d8490";
   };
   "nixpkgs-master" = {
     url = "https://github.com/NixOS/nixpkgs/";
     ref = "master";
-    rev = "200f2a7c58ed6b40b618377288c071314875fcd3";
+    rev = "237adfc14ee0dba5b109f898df331254f963141a";
   };
   "home-manager-module" = {
     url = "https://github.com/nix-community/home-manager";
-    ref = "release-21.05";
-    rev = "b39647e52ed3c0b989e9d5c965e598ae4c38d7ef";
+    ref = "release-21.11";
+    rev = "6ce1d64073f48b9bc9425218803b1b607454c1e7";
   };
 }