diff --git a/rust/.gitea/workflows/flake-update.yaml b/rust/.gitea/workflows/flake-update.yaml
new file mode 100644
index 0000000..2055915
--- /dev/null
+++ b/rust/.gitea/workflows/flake-update.yaml
@@ -0,0 +1,30 @@
+name: "Flake.lock: update Nix dependencies for development environment only"
+
+on:
+  workflow_dispatch: # allows manual triggering
+  schedule:
+    - cron: '00 00 01 1/2 *' # runs the first of day the month every 2 months at 7:00pm local time (midnight UTC)
+
+jobs:
+  nix-flake-update:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "install nix"
+        uses: cachix/install-nix-action@v31
+
+      - name: "setup git user"
+        uses: fregante/setup-git-user@v2
+
+      - name: "update flake.lock"
+        run: |
+          nix flake update --commit-lock-file
+
+      - name: "check flake for errors"
+        run: |
+          nix flake check
+
+      - name: "push update"
+        run: |
+          git push