diff --git a/README.md b/README.md
index 0d01ee74..d7c6a2fe 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ Bootstrap JavaScript depends on jQuery.
 If you're using Rails 5.1+, add the `jquery-rails` gem to your Gemfile:
 
 ```ruby
-gem 'jquery-rails'
+gem 'jquery-rails', '~> 4.3.1'
 ```
 
 Bootstrap tooltips and popovers depend on [popper.js] for positioning.