diff --git a/.github/workflows/flakeupdate.yml b/.github/workflows/flakeupdate.yml
new file mode 100644
index 000000000..5a92a1ddf
--- /dev/null
+++ b/.github/workflows/flakeupdate.yml
@@ -0,0 +1,39 @@
+name: update flake
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * 0"
+
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: read
+    steps:
+      - name: Checkout
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@7ac1ec25491415c381d9b62f0657c7a028df52a7 # v24
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Update flake.lock
+        uses: DeterminateSystems/update-flake-lock@da2fd6f2563fe3e4f2af8be73b864088564e263d # v20
+        with:
+          pr-title: "flake.lock: Update"
+          pr-labels: |
+            dependencies
+          pr-body: |
+            Automated changes by the [update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock) GitHub Action.
+
+            ```
+            {{ env.GIT_COMMIT_MESSAGE }}
+            ```
+          git-author-name: 'edgelessci'
+          git-author-email: 'edgelessci@users.noreply.github.com'
+          git-committer-name: 'edgelessci'
+          git-committer-email: 'edgelessci@users.noreply.github.com'
+          token: ${{ secrets.NUNKI_CI_COMMIT_PUSH_PR }}