diff --git a/README.md b/README.md
index 78a71c0..d1ad428 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ Currently, there is no such thing as Ruby Cron for Rails. Well, there's [Wheneve
 
 ## Requirements
 
-Tested with latest MRI Ruby 2.2+, Rails 4.*, and Rails 5.*.
+Tested with latest MRI Ruby 2.2+, Rails 4.\*, and Rails 5.\*.
 Other versions are untested but might work fine.