diff --git a/.github/workflows/nix-flake-update.yml b/.github/workflows/nix-flake-update.yml
index 2745f5320..ea936a0bf 100644
--- a/.github/workflows/nix-flake-update.yml
+++ b/.github/workflows/nix-flake-update.yml
@@ -20,7 +20,8 @@ on:
     - cron: '0 0 * * 0' # Weekly on Sundays
 
 permissions:
-  contents: read
+  contents: write
+  pull-requests: write
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -31,9 +32,6 @@ jobs:
     name: Update flake.lock
     runs-on: ubuntu-latest
     timeout-minutes: 30
-    permissions:
-      contents: write
-      pull-requests: write
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6
@@ -52,7 +50,10 @@ jobs:
           pr-labels: |
             dependencies
             nix
+            automated
           commit-msg: "chore(deps): update flake.lock"
+          pr-reviewers: houseme, heihutu
+          token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Log PR details
         if: steps.update.outputs.pull-request-number
diff --git a/flake.lock b/flake.lock
index 4822d9da5..8380f8921 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1765270179,
-        "narHash": "sha256-g2a4MhRKu4ymR4xwo+I+auTknXt/+j37Lnf0Mvfl1rE=",
+        "lastModified": 1770843696,
+        "narHash": "sha256-LovWTGDwXhkfCOmbgLVA10bvsi/P8eDDpRudgk68HA8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "677fbe97984e7af3175b6c121f3c39ee5c8d62c9",
+        "rev": "2343bbb58f99267223bc2aac4fc9ea301a155a16",
         "type": "github"
       },
       "original": {
@@ -18,7 +18,28 @@
     },
     "root": {
       "inputs": {
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1771125043,
+        "narHash": "sha256-ldf/s49n6rOAxl7pYLJGGS1N/assoHkCOWdEdLyNZkc=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "4912f951a26dc8142b176be2c2ad834319dc06e8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
       }
     }
   },