diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c7fc28f65f1a..c0e288e8895e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -271,6 +271,6 @@ You can find out more detailed information about contributing in the
 [ngDocs]: https://github.com/angular/angular.js/wiki/Writing-AngularJS-Documentation
 [plunker]: http://plnkr.co/edit
 [stackoverflow]: http://stackoverflow.com/questions/tagged/angularjs
-[unit-testing]: http://docs.angularjs.org/guide/dev_guide.unit-testing
+[unit-testing]: https://docs.angularjs.org/guide/unit-testing
 
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