diff --git a/flake.nix b/flake.nix
index 84e1634..3d9f8e4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,18 +1,16 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.05-small";
-    utils.url = "github:gytis-ivaskevicius/flake-utils-plus/v1.3.1";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.11-small";
 
     hm = {
-      url = "github:nix-community/home-manager/release-22.05";
+      url = "github:nix-community/home-manager/release-22.11";
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
     # simple mailserver
     snm = {
-      url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-22.05";
-      inputs.nixpkgs.follows = "nixpkgs";
-      inputs.flake-utils.follows = "utils/flake-utils";
+      url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-22.11";
+      inputs.nixpkgs-22_11.follows = "nixpkgs";
     };
 
     # age for nix to store encrypted passwords conveniently
diff --git a/hosts/thrall/default.nix b/hosts/thrall/default.nix
index e565d7a..e068f7e 100644
--- a/hosts/thrall/default.nix
+++ b/hosts/thrall/default.nix
@@ -16,7 +16,7 @@
   # nix.registry.nixpkgs.flake = nixpkgs;
 
   # Binary Cache for Haskell.nix
-  nix.binaryCachePublicKeys =
+  nix.settings.trusted-public-keys =
     [ "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=" ];
   #nix.binaryCaches = [ "https://hydra.iohk.io" ];