diff --git a/Gemfile b/Gemfile
index 1a6016f..ed3814a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem 'rails', '5.2.3'
 # Use sqlite3 as the database for Active Record
 gem 'pg', '0.21.0'
 # Use Puma as the app server
-gem 'puma', '3.12.6'
+gem 'puma', '5.6.8'
 # Use SCSS for stylesheets
 gem 'sass-rails', '5.0.6'
 # Use Uglifier as compressor for JavaScript assets