diff --git a/.github/workflows/bundlewatch.yml b/.github/workflows/bundlewatch.yml
new file mode 100644
index 00000000..bf064f85
--- /dev/null
+++ b/.github/workflows/bundlewatch.yml
@@ -0,0 +1,19 @@
+name: BundleWatch
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  bundle:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: |
+          npm ci
+          npm run build
+          npx bundlewatch --max-size 100kb ./dist/**/*.js
+        env:
+          BUNDLEWATCH_GITHUB_TOKEN: ${{ secrets.BUNDLEWATCH_GITHUB_TOKEN }}
+          CI_REPO_OWNER: cheeaun
+          CI_REPO_NAME: phanpy