diff --git a/.github/workflows/flake-update.yml b/.github/workflows/flake-update.yml
index 9a33440..8d070bb 100644
--- a/.github/workflows/flake-update.yml
+++ b/.github/workflows/flake-update.yml
@@ -37,7 +37,7 @@ jobs:
       # or closing and reopening the PR; swap in a PAT via `token:` if
       # self-triggering CI is required.
       - name: Update flake.lock
-        uses: DeterminateSystems/update-flake-lock@834c491b2ece4de0bbd00d85214bb5e83b4da5c6 # v28
+        uses: DeterminateSystems/update-flake-lock@da03c0f078bc4b2c37ee4f7e072d34bf8f188bb3 # v29
         with:
           pr-title: "chore: update flake.lock"
           commit-msg: "chore: update flake.lock"