diff --git a/tests/scripts/ito-handoff.test.js b/tests/scripts/ito-handoff.test.js
index 102a549e0..349ee5386 100644
--- a/tests/scripts/ito-handoff.test.js
+++ b/tests/scripts/ito-handoff.test.js
@@ -272,6 +272,7 @@ function main() {
       const result = spawnSync(npmExecutable, ["run", "welcome"], {
         cwd: REPO_ROOT,
         encoding: "utf8",
+        shell: process.platform === "win32",
       })
       assert.strictEqual(result.status, 0, result.stderr)
       assert.match(result.stdout, /Itô/)