diff --git a/.github/workflows/pr-check.yaml b/.github/workflows/pr-check.yaml
new file mode 100644
index 0000000..85f0f9e
--- /dev/null
+++ b/.github/workflows/pr-check.yaml
@@ -0,0 +1,28 @@
+name: pr-check
+
+on: [ pull_request ]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
+jobs:
+  check-dist:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v5.0.0
+        with:
+          run_install: true
+          version: 9
+
+      - name: Update dist/index.js
+        run: pnpm run build
+
+      - name: Check for uncommitted changes in dist
+        run: git diff --exit-code dist/index.js
diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml
new file mode 100644
index 0000000..5ed0b5a
--- /dev/null
+++ b/pnpm-workspace.yaml
@@ -0,0 +1,2 @@
+allowBuilds:
+  esbuild: true