diff --git a/README.md b/README.md
index d3e42431f4..d431b67213 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 [![Commits](https://img.shields.io/github/commit-activity/y/dequelabs/axe-core.svg)](https://github.com/dequelabs/axe-core/commits/develop)
 [![GitHub contributors](https://img.shields.io/github/contributors/dequelabs/axe-core.svg)](https://github.com/dequelabs/axe-core/graphs/contributors)
 [![Join our Slack chat](https://img.shields.io/badge/slack-chat-purple.svg?logo=slack)](https://accessibility.deque.com/axe-community)
-[![Package Quality](http://npm.packagequality.com/shield/axe-core.svg)](http://packagequality.com/#?package=axe-core)
+[![Package Quality](https://npm.packagequality.com/shield/axe-core.svg)](https://packagequality.com/#?package=axe-core)
 
 Axe is an accessibility testing engine for websites and other HTML-based user interfaces. It's fast, secure, lightweight, and was built to seamlessly integrate with any existing test environment so you can automate accessibility testing alongside your regular functional testing.