diff --git a/gemfiles/sinatra-2.x/Gemfile b/gemfiles/sinatra-2.x/Gemfile
index 11e0029d..4784c5a7 100644
--- a/gemfiles/sinatra-2.x/Gemfile
+++ b/gemfiles/sinatra-2.x/Gemfile
@@ -2,7 +2,7 @@ source "https://rubygems.org"
 
 gemspec path: "../.."
 
-gem "sinatra", "~> 2"
+gem "sinatra", "~> 4"
 
 ENV["SIDEKIQ_VERSION"] = "~> 7"
 # Test additional libraries with oldest and newest versions of Sintra