diff --git a/test/browser/package.json b/test/browser/package.json
index ec97bb065afd..86c2a34ced29 100644
--- a/test/browser/package.json
+++ b/test/browser/package.json
@@ -4,8 +4,8 @@
   "private": true,
   "scripts": {
     "test": "pnpm run test:webdriverio && pnpm run test:playwright",
-    "test:webdriverio": "PROVIDER=webdriverio node --test specs/",
-    "test:playwright": "PROVIDER=playwright node --test specs/",
+    "test:webdriverio": "PROVIDER=webdriverio node --test --test-concurrency=1 specs/",
+    "test:playwright": "PROVIDER=playwright node --test --test-concurrency=1 specs/",
     "coverage": "vitest --coverage.enabled --coverage.provider=istanbul --browser.headless=yes"
   },
   "devDependencies": {