diff --git a/core/package.json b/core/package.json
index 346414d83e..f7b25db222 100644
--- a/core/package.json
+++ b/core/package.json
@@ -79,7 +79,7 @@
     "prerelease": "npm run validate && np prerelease --yolo --any-branch --tag next",
     "prerender.e2e": "node scripts/testing/prerender.js",
     "start": "npm run build.css && stencil build --dev --watch --serve",
-    "test": "stencil test --spec --e2e",
+    "test": "stencil test --spec --e2e --max-workers=2",
     "test.spec": "stencil test --spec",
     "test.spec.debug": "npx --node-arg=\"--inspect-brk\" stencil test --spec",
     "test.e2e": "stencil test --e2e",