diff --git a/.github/workflows/trigger-site-deploy.yml b/.github/workflows/trigger-site-deploy.yml
new file mode 100644
index 000000000..b4868699d
--- /dev/null
+++ b/.github/workflows/trigger-site-deploy.yml
@@ -0,0 +1,16 @@
+name: Trigger Site Update
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  trigger-site:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send repository_dispatch to site-repo
+        uses: peter-evans/repository-dispatch@v3
+        with:
+          token: ${{ secrets.SITE_REPO_TOKEN }}
+          repository: KotatsuApp/website
+          event-type: app-release