diff --git a/utils/browser/README.md b/utils/browser/README.md
index 842ec6de0803f..1fb0d7787cfe8 100644
--- a/utils/browser/README.md
+++ b/utils/browser/README.md
@@ -24,3 +24,13 @@ another browser instance through its WS Endpoint:
 See our [puppeteer-web tests](https://github.com/GoogleChrome/puppeteer/blob/master/utils/browser/test.js)
 for details.
 
+### Running inside Chrome Extension
+
+You might want to enable `unsafe-eval` inside the extension by adding the following
+to your `manifest.json` file:
+
+```
+"content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
+```
+
+Please see discussion in https://github.com/GoogleChrome/puppeteer/issues/3455.