diff --git a/hstest/chromium/browser.ts b/hstest/chromium/browser.ts
index eae98f3..c7d11dc 100644
--- a/hstest/chromium/browser.ts
+++ b/hstest/chromium/browser.ts
@@ -14,7 +14,7 @@ class Browser {
         devtools: false,
         // @ts-ignore
         ...global.browserOptions,
-        ignoreDefaultArgs: ['--enable-automation'],
+        ignoreDefaultArgs: ['--enable-automation', '--disable-extensions'],
     };
 
     async launch(): Promise<void> {