diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..3e6eebe
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,11 @@
+name: (Preview) Update last commit time
+
+on: push
+
+jobs:
+  update-preview:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run update.py
+        run: python3 update_time.py && ls -alh && diff README.md test.md --color=always || true