diff --git a/flake.lock b/flake.lock
index 97fa356..ffe062a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -252,11 +252,11 @@
         "xdph": "xdph"
       },
       "locked": {
-        "lastModified": 1691612137,
-        "narHash": "sha256-7nMCJIZBB2XIjUqAjImoTaZBVIg/0REripGdNsClxlQ=",
+        "lastModified": 1691768277,
+        "narHash": "sha256-2D41BKuzFTqHlOka9MoKrDs/xljr29dXV3zdauAqM3c=",
         "owner": "hyprwm",
         "repo": "Hyprland",
-        "rev": "126792584fa4eb25f6c8e3b3eb6bfb00b58a787a",
+        "rev": "3f7f4207a6dd8bd217c01514ea40e9e4b9b7874a",
         "type": "github"
       },
       "original": {
@@ -295,11 +295,11 @@
         "pre-commit-hooks-nix": "pre-commit-hooks-nix"
       },
       "locked": {
-        "lastModified": 1689889377,
-        "narHash": "sha256-ChBawisTCY3Cl06CSG+QNC2ES+G0ASiOxtOVif9uP/0=",
+        "lastModified": 1691761621,
+        "narHash": "sha256-xTPifd7/93/bmBEPMhb0zuU9nzRkUIZHr+PJUHoUld8=",
         "owner": "nix-community",
         "repo": "lanzaboote",
-        "rev": "e7246c6bce1733d373059e6342f67fd53f90c198",
+        "rev": "f13848606f5a313c33b9c9ceb34e0ae4d51b6766",
         "type": "github"
       },
       "original": {
@@ -310,11 +310,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1691566999,
-        "narHash": "sha256-c4G++nXzVgJbXe5tuUZxSS+SbDqynO/nG3wocRcP6YE=",
+        "lastModified": 1691730710,
+        "narHash": "sha256-q/UBet5RdX8CBjOIpI2Y8EB8DXYr9cb7WuNGTP9HKf8=",
         "owner": "nixos",
         "repo": "nixos-hardware",
-        "rev": "8ff521acd2c8132c62141c2990deb7406e32b335",
+        "rev": "f61352cf8066ddd3dfe9058e62184bae7382672d",
         "type": "github"
       },
       "original": {
@@ -405,11 +405,11 @@
     },
     "nixpkgs_5": {
       "locked": {
-        "lastModified": 1691565530,
-        "narHash": "sha256-qZZ6DxvS1X/tjxXNUwJrPiaIWLZyWUDM2gkJCi5uZpE=",
+        "lastModified": 1691654369,
+        "narHash": "sha256-gSILTEx1jRaJjwZxRlnu3ZwMn1FVNk80qlwiCX8kmpo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e528fa15d5f740a25b5f536c33932db64cb10fc8",
+        "rev": "ce5e4a6ef2e59d89a971bc434ca8ca222b9c7f5e",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 0eef290..5e2e1e7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -30,6 +30,15 @@
     hyprland.url = "github:hyprwm/Hyprland";
   };
 
+  nixConfig = {
+    extra-substituters =
+      [ "https://nix-community.cachix.org" "https://hyprland.cachix.org" ];
+    extra-trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
+    ];
+  };
+
   outputs = { nixpkgs, flake-utils, lanzaboote, agenix, home-manager
     , nixos-hardware, ... }@attrs:
 
diff --git a/hosts/neodymium/system/nix/default.nix b/hosts/neodymium/system/nix/default.nix
index 7e3d1d2..ca85fc7 100644
--- a/hosts/neodymium/system/nix/default.nix
+++ b/hosts/neodymium/system/nix/default.nix
@@ -17,9 +17,12 @@
 
   # binary caches
   nix.settings = {
-    substituters = [ "https://hyprland.cachix.org" ];
-    trusted-public-keys =
-      [ "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc=" ];
+    substituters =
+      [ "https://hyprland.cachix.org" "https://nix-community.cachix.org" ];
+    trusted-public-keys = [
+      "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
   };
 
   # list of allowed unfree packages