diff --git a/scripts/test.mjs b/scripts/test.mjs
index 4b07d6021..cea872488 100644
--- a/scripts/test.mjs
+++ b/scripts/test.mjs
@@ -59,7 +59,7 @@ const nodeArgs = [
   ...files,
 ];
 
-function installChrome(version) {
+function _installChrome(version) {
   try {
     return execSync(
       `npx puppeteer browsers install chrome@${version} --format "{{path}}"`,
@@ -92,9 +92,6 @@ async function runTests(attempt) {
   });
 }
 
-const chromePath = installChrome('146.0.7680.31');
-process.env.CHROME_M146_EXECUTABLE_PATH = chromePath;
-
 const maxAttempts = shouldRetry ? 3 : 1;
 let exitCode = 1;
 
diff --git a/tests/tools/extensions.test.ts b/tests/tools/extensions.test.ts
index 8f8b5a878..6f3fd38f3 100644
--- a/tests/tools/extensions.test.ts
+++ b/tests/tools/extensions.test.ts
@@ -148,9 +148,7 @@ describe('extension', () => {
         );
         assert.ok(pageTargetAfter, 'Page should exist after action');
       },
-      {
-        executablePath: process.env.CHROME_M146_EXECUTABLE_PATH,
-      },
+      {},
       {
         categoryExtensions: true,
       } as ParsedArguments,
diff --git a/tests/tools/pages.test.ts b/tests/tools/pages.test.ts
index d278cd0a3..46178d900 100644
--- a/tests/tools/pages.test.ts
+++ b/tests/tools/pages.test.ts
@@ -88,10 +88,9 @@ describe('pages', () => {
             '<extension-id>',
           );
           t.assert.snapshot?.(text);
+          await context.uninstallExtension(extensionId);
         },
-        {
-          executablePath: process.env.CHROME_M146_EXECUTABLE_PATH,
-        },
+        {},
         {
           categoryExtensions: true,
         } as ParsedArguments,
@@ -144,6 +143,7 @@ describe('pages', () => {
               '<extension-id>',
             );
             t.assert.snapshot?.(text);
+            await context.uninstallExtension(extensionId);
           },
           {},
           {
@@ -195,9 +195,10 @@ describe('pages', () => {
             '<extension-id>',
           );
           t.assert.snapshot?.(text);
+          await context.uninstallExtension(extensionId);
         },
         {
-          executablePath: process.env.CHROME_M146_EXECUTABLE_PATH,
+          spawnNewBrowser: true,
         },
         {
           categoryExtensions: true,
diff --git a/tests/utils.ts b/tests/utils.ts
index 4d48d970c..670b8ab6a 100644
--- a/tests/utils.ts
+++ b/tests/utils.ts
@@ -62,6 +62,7 @@ export async function withBrowser(
     debug?: boolean;
     autoOpenDevTools?: boolean;
     executablePath?: string;
+    spawnNewBrowser?: boolean;
   } = {},
 ) {
   const launchOptions: LaunchOptions = {
@@ -77,7 +78,7 @@ export async function withBrowser(
   };
   const key = JSON.stringify(launchOptions);
 
-  let browser = browsers.get(key);
+  let browser = options.spawnNewBrowser && browsers.get(key);
   if (!browser) {
     browser = await puppeteer.launch(launchOptions);
     browsers.set(key, browser);
@@ -102,6 +103,7 @@ export async function withMcpContext(
     autoOpenDevTools?: boolean;
     performanceCrux?: boolean;
     executablePath?: string;
+    spawnNewBrowser?: boolean;
   } = {},
   args: ParsedArguments = {} as ParsedArguments,
 ) {