diff --git a/home-manager/flake.lock b/home-manager/flake.lock
index 425a41a..8cc2ebf 100644
--- a/home-manager/flake.lock
+++ b/home-manager/flake.lock
@@ -84,6 +84,27 @@
         "type": "github"
       }
     },
+    "codex-cli-nix": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1770896158,
+        "narHash": "sha256-ktNIry6OR+Aq0tBql5nHS39rt7sgEuBhpD8t9uJDDiA=",
+        "owner": "sadjow",
+        "repo": "codex-cli-nix",
+        "rev": "5d41d836ea68e1daf850b009f834215b708b9735",
+        "type": "github"
+      },
+      "original": {
+        "owner": "sadjow",
+        "repo": "codex-cli-nix",
+        "type": "github"
+      }
+    },
     "crane": {
       "locked": {
         "lastModified": 1770419512,
@@ -155,6 +176,24 @@
         "type": "github"
       }
     },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "fromYaml": {
       "flake": false,
       "locked": {
@@ -366,6 +405,7 @@
     },
     "root": {
       "inputs": {
+        "codex-cli-nix": "codex-cli-nix",
         "home-manager": "home-manager",
         "niri": "niri",
         "nixpkgs": "nixpkgs_3",
@@ -425,7 +465,7 @@
           "nixpkgs"
         ],
         "nur": "nur",
-        "systems": "systems",
+        "systems": "systems_2",
         "tinted-foot": "tinted-foot",
         "tinted-kitty": "tinted-kitty",
         "tinted-schemes": "tinted-schemes",
@@ -461,6 +501,21 @@
         "type": "github"
       }
     },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
     "tinted-foot": {
       "flake": false,
       "locked": {
diff --git a/home-manager/flake.nix b/home-manager/flake.nix
index e7401af..64fa5f4 100644
--- a/home-manager/flake.nix
+++ b/home-manager/flake.nix
@@ -33,9 +33,14 @@
       url = "github:Naxdy/niri";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+
+    codex-cli-nix = {
+      url = "github:sadjow/codex-cli-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = { nixpkgs, home-manager, rust-overlay, stylix, niri, ... }@inputs: {
+  outputs = { nixpkgs, home-manager, rust-overlay, stylix, niri, codex-cli-nix, ... }@inputs: {
     homeConfigurations.lusia = home-manager.lib.homeManagerConfiguration {
       pkgs = nixpkgs.legacyPackages.x86_64-linux;
 
diff --git a/home-manager/home.nix b/home-manager/home.nix
index fe69ef6..75d1640 100644
--- a/home-manager/home.nix
+++ b/home-manager/home.nix
@@ -83,7 +83,7 @@
 
     # AI development tools
     claude-code
-    codex
+    inputs.codex-cli-nix.packages.${pkgs.system}.default
     gemini-cli
 
     # Internet & networking