diff --git a/flake.lock b/flake.lock
index 368a44b..45cef86 100644
--- a/flake.lock
+++ b/flake.lock
@@ -477,6 +477,22 @@
         "type": "github"
       }
     },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1730531603,
+        "narHash": "sha256-Dqg6si5CqIzm87sp57j5nTaeBbWhHFaVyG7V6L8k3lY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "7ffd9ae656aec493492b44d0ddfb28e79a1ea25d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nur": {
       "locked": {
         "lastModified": 1731119600,
@@ -632,6 +648,7 @@
         "tree-sitter-python": "tree-sitter-python",
         "tree-sitter-rasi": "tree-sitter-rasi",
         "tree-sitter-vimdoc": "tree-sitter-vimdoc",
+        "ucodenix": "ucodenix",
         "wallpapers": "wallpapers",
         "wsl": "wsl",
         "zenyd-mpv-scripts": "zenyd-mpv-scripts"
@@ -879,6 +896,24 @@
         "type": "github"
       }
     },
+    "ucodenix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1731337052,
+        "narHash": "sha256-/wKkjAHHmaov6VWW7POdL+dUWtAWA9Zs6Ys/r7ugy00=",
+        "owner": "e-tho",
+        "repo": "ucodenix",
+        "rev": "5d8df57d4258d225dc9f5c2c4bb96855842cbac2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "e-tho",
+        "repo": "ucodenix",
+        "type": "github"
+      }
+    },
     "wallpapers": {
       "flake": false,
       "locked": {
diff --git a/flake.nix b/flake.nix
index 39fbb55..5d6f2ec 100644
--- a/flake.nix
+++ b/flake.nix
@@ -31,6 +31,9 @@
       inputs.nixpkgs.follows = "nixpkgs"; # Use system packages list for their inputs
     };
 
+    # Used for AMD CPU microcode
+    ucodenix.url = "github:e-tho/ucodenix";
+
     # Community packages; used for Firefox extensions
     nur.url = "github:nix-community/nur";
 
diff --git a/hosts/tempest/default.nix b/hosts/tempest/default.nix
index 9751d29..1f2f4b3 100644
--- a/hosts/tempest/default.nix
+++ b/hosts/tempest/default.nix
@@ -17,6 +17,7 @@ inputs.nixpkgs.lib.nixosSystem rec {
   modules = [
     globals
     inputs.home-manager.nixosModules.home-manager
+    inputs.ucodenix.nixosModules.default
     ../../modules/common
     ../../modules/nixos
     {
@@ -49,6 +50,7 @@ inputs.nixpkgs.lib.nixosSystem rec {
 
       # Allow firmware updates
       hardware.cpu.amd.updateMicrocode = true;
+      services.ucodenix.enable = true;
 
       # Helps reduce GPU fan noise under idle loads
       hardware.fancontrol.enable = true;