diff --git a/README.md b/README.md
index 1a24250a..319394c2 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ Resque.enqueue_at(5.days.from_now, SomeJob, argument) # runs a job at a specific
 
 This `README` covers what most people need to know.  If you're looking
 for details on individual methods, you might want to try the
-[rubydoc](http://rubydoc.info/github/resque/resque-scheduler/master/frames).
+[rubydoc](https://rubydoc.info/github/resque/resque-scheduler/master/frames).
 
 ### Installation