diff --git a/.github/workflows/readme-stars.yml b/.github/workflows/readme-stars.yml
new file mode 100644
index 0000000..12137dd
--- /dev/null
+++ b/.github/workflows/readme-stars.yml
@@ -0,0 +1,52 @@
+name: Update README ⭐
+on:
+  schedule:
+    - cron: "0 11 * 12 *"
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  update-readme:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Check year for cron
+        if: github.event_name == 'schedule'
+        run: |
+          current_year=$(date +'%Y')
+          if [ "$current_year" -ne "2024" ]; then
+            echo "No longer 2024, delete this action's schedule."
+            exit 1
+          fi
+
+      - name: Check commit message for push
+        id: check_commit_message
+        if: github.event_name == 'push'
+        continue-on-error: true
+        run: |
+          COMMIT_MESSAGE=$(git log -1 --pretty=%B)
+          if ! [[ "$COMMIT_MESSAGE" =~ ^day\ [0-9]{2}$ ]]; then
+            echo "Commit message does not match solution pattern"
+            exit 1
+          fi
+
+      - name: Update README stars
+        id: update_readme_stars
+        if: steps.check_commit_message.outcome == 'success' || github.event_name != 'push'
+        uses: k2bd/advent-readme-stars@v1
+        with:
+          userId: 4388690
+          year: 2024
+          sessionCookie: ${{ secrets.AOC_SESSION }}
+
+      - name: Commit changes
+        if: steps.update_readme_stars.outcome == 'success'
+        uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_message: auto-update README stars
diff --git a/README.md b/README.md
index daa1424..0810e74 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,8 @@ Use the `test` task to run all tests against the sample data (mostly for CI):
 deno run test
 ```
 
+<!--- advent_readme_stars table --->
+
 ## Useful references
 
 - https://github.com/denoland/advent-of-code-2024