diff --git a/tests/playwright-test/playwright-test.config.ts b/tests/playwright-test/playwright-test.config.ts
index 6056acdd01..317b286a81 100644
--- a/tests/playwright-test/playwright-test.config.ts
+++ b/tests/playwright-test/playwright-test.config.ts
@@ -21,6 +21,7 @@ const config: Config = {
   testIgnore: ['assets/**', 'stable-test-runner/**'],
   timeout: 30000,
   forbidOnly: !!process.env.CI,
+  workers: process.env.CI ? 1 : undefined,
   preserveOutput: process.env.CI ? 'failures-only' : 'always',
   projects: process.env.PLAYWRIGHT_DOCKER ? [
     { name: 'visual tests', testMatch: ['*.visual.ts'] },