diff --git a/README.md b/README.md
index 50d781984..494ab3795 100644
--- a/README.md
+++ b/README.md
@@ -82,7 +82,7 @@ Or add it to your `Gemfile`:
 
 ```ruby
 # Gemfile
-gem 'webpacker', '~> 4.x'
+gem 'webpacker', '~> 5.x'
 
 # OR if you prefer to use master
 gem 'webpacker', git: 'https://github.com/rails/webpacker.git'