diff --git a/configuration.nix b/configuration.nix
index 89908d8..8a2966c 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -96,6 +96,14 @@ in
   # NixOS settings.
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
   nix.settings.accept-flake-config = true;
+  nix.settings.extra-substituters = [
+    "https://attic.radiantwavetech.com/radiantwave"
+    "https://attic.radiantwavetech.com/radiantwave-dev"
+  ];
+  nix.settings.extra-trusted-public-keys = [
+    "radiantwave:QADrjpBWJssTZ3KmiZtcWEf4uAm66oOlHmtQI3jkrgA="
+    "radiantwave-dev:B8FhLu3MQ9JfeEIHIKNrKxnP+3akzzkqMbTZR4hRfj0="
+  ];
   system.stateVersion = "24.05";
 
   ############################################################
diff --git a/flake.lock b/flake.lock
index 3b17c75..55f4eb9 100644
--- a/flake.lock
+++ b/flake.lock
@@ -240,11 +240,11 @@
         "nixpkgs": "nixpkgs_4"
       },
       "locked": {
-        "lastModified": 1787341934,
-        "narHash": "sha256-pWGpgM5acdCO02H8P3KKtdv09n9ucnI3cg8d3/tvwtk=",
+        "lastModified": 1787507168,
+        "narHash": "sha256-LeMd6lnfhnixC+e77yM5DG5gVYaEa+URfKD+yEmenJc=",
         "ref": "dev",
-        "rev": "b96631c374682088088b3d679359d192a0ae74d6",
-        "revCount": 35,
+        "rev": "f2a40cd0194fe920a0fc1062d57a93dfc6693b52",
+        "revCount": 38,
         "type": "git",
         "url": "https://gitea.radiantwavetech.com/RadiantWaveTech/radiantwave.git"
       },