diff --git a/.github/workflows/update-wpt.yml b/.github/workflows/update-wpt.yml
new file mode 100644
index 00000000000000..46053ce8d1f6a5
--- /dev/null
+++ b/.github/workflows/update-wpt.yml
@@ -0,0 +1,74 @@
+name: Update WPT
+
+on:
+  workflow_dispatch:
+  schedule:
+    # Run once a week at 12:00 AM UTC on Sunday.
+    - cron: 0 0 * * *
+
+jobs:
+  update-wpt:
+    name: Update WPT
+    permissions:
+      contents: write
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332  # v4.1.7
+        with:
+          persist-credentials: false
+      - name: Update WPT
+        run: |
+          rm -rf test/fixtures/wpt && mkdir test/fixtures/wpt &&
+          - name: Clone WPT Repository
+            uses: actions/checkout@v2
+            with:
+              repository: web-platform-tests/wpt
+              ref: ${{ github.sha }}
+              path: test/fixtures/tmp-wpt
+              sparse-checkout: |
+                common/
+                eventsource/
+                fetch/
+                interfaces/
+                mimesniff/
+                resources/
+                service-workers/
+                storage/
+                websockets/
+                xhr/
+          - name: Move WPT Files
+            run: |
+              mv test/fixtures/tmp-wpt/LICENSE.md test/fixtures/wpt/LICENSE.md &&
+              mv test/fixtures/tmp-wpt/common test/fixtures/wpt/common &&
+              mv test/fixtures/tmp-wpt/eventsource test/fixtures/wpt/eventsource &&
+              mv test/fixtures/tmp-wpt/fetch test/fixtures/wpt/fetch &&
+              mv test/fixtures/tmp-wpt/interfaces test/fixtures/wpt/interfaces &&
+              mv test/fixtures/tmp-wpt/mimesniff test/fixtures/wpt/mimesniff &&
+              mv test/fixtures/tmp-wpt/resources test/fixtures/wpt/resources &&
+              mv test/fixtures/tmp-wpt/service-workers test/fixtures/wpt/service-workers &&
+              mv test/fixtures/tmp-wpt/storage test/fixtures/wpt/storage &&
+              mv test/fixtures/tmp-wpt/websockets test/fixtures/wpt/websockets &&
+              mv test/fixtures/tmp-wpt/xhr test/fixtures/wpt/xhr &&
+              rm -rf test/fixtures/tmp-wpt
+          mv test/fixtures/tmp-wpt/LICENSE.md test/fixtures/wpt/LICENSE.md &&
+          mv test/fixtures/tmp-wpt/common test/fixtures/wpt/common &&
+          mv test/fixtures/tmp-wpt/eventsource test/fixtures/wpt/eventsource &&
+          mv test/fixtures/tmp-wpt/fetch test/fixtures/wpt/fetch &&
+          mv test/fixtures/tmp-wpt/interfaces test/fixtures/wpt/interfaces &&
+          mv test/fixtures/tmp-wpt/mimesniff test/fixtures/wpt/mimesniff &&
+          mv test/fixtures/tmp-wpt/resources test/fixtures/wpt/resources &&
+          mv test/fixtures/tmp-wpt/service-workers test/fixtures/wpt/service-workers &&
+          mv test/fixtures/tmp-wpt/storage test/fixtures/wpt/storage &&
+          mv test/fixtures/tmp-wpt/websockets test/fixtures/wpt/websockets &&
+          mv test/fixtures/tmp-wpt/xhr test/fixtures/wpt/xhr &&
+          rm -rf test/fixtures/tmp-wpt
+      - name: Create or Update Pull Request
+        uses: peter-evans/create-pull-request@c5a7806660adbe173f04e3e038b0ccdcd758773c  # v6.1.0
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          branch: actions/wpt-update
+          title: Update WPT
+          body: Automated update of the WPT
+          commit-message: 'test: update wpt test'