diff --git a/README.md b/README.md
index e99a290a..d558fc57 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ Installation
 
 Just add this into your Gemfile followed by a bundle install:
 ```ruby
-gem "simple_calendar", "~> 2.4"
+gem "simple_calendar"
 ```
 
 If you're using Bootstrap, the calendar should already have a border and