diff --git a/flake.nix b/flake.nix
index 45f7a4f..afe71dd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,7 +13,7 @@
     # Home manager
     home-manager.url = "github:nix-community/home-manager/master";
     home-manager.inputs.nixpkgs.follows = "nixpkgs";
-
+    extest.url = "github:chaorace/nix-extest/main";
     # Add any other flake you might need
     # hardware.url = "github:nixos/nixos-hardware";
 
diff --git a/nixos/hosts/shodan/configuration.nix b/nixos/hosts/shodan/configuration.nix
index 96afd6a..9c9c6a5 100644
--- a/nixos/hosts/shodan/configuration.nix
+++ b/nixos/hosts/shodan/configuration.nix
@@ -43,6 +43,7 @@
       outputs.overlays.additions
       outputs.overlays.modifications
       outputs.overlays.unstable-packages
+      inputs.extest.overlays.default
 
       # You can also add overlays exported from other flakes:
       # neovim-nightly-overlay.overlays.default
@@ -139,6 +140,9 @@
   jovian.devices.steamdeck.autoUpdate = true;
 
   programs.steam = {
+    override = {
+      extraProfile = ''export LD_PRELOAD=${pkgs.extest}/lib/libextest.so:$LD_PRELOAD'';
+    };
     enable = true;
     remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
     dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server