diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index c9db15e7..8b6e5686 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -34,7 +34,8 @@ jobs:
 
       - uses: actions/setup-node@v6
         with:
-          node-version: "20"
+          # wrangler 4 refuses to start below Node.js 22 — the first CI deploy failed on it.
+          node-version: "22"
           cache: npm
           cache-dependency-path: frontend/package-lock.json