diff --git a/component_based_rails_applications/sportsball/Gemfile b/component_based_rails_applications/sportsball/Gemfile
index 3023e4f0..12bd1519 100644
--- a/component_based_rails_applications/sportsball/Gemfile
+++ b/component_based_rails_applications/sportsball/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.0.rc1'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.4'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 5.2'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
diff --git a/component_based_rails_applications/sportsball/Gemfile.lock b/component_based_rails_applications/sportsball/Gemfile.lock
index c3375e4f..32b85ccf 100644
--- a/component_based_rails_applications/sportsball/Gemfile.lock
+++ b/component_based_rails_applications/sportsball/Gemfile.lock
@@ -119,7 +119,8 @@ GEM
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     public_suffix (4.0.1)
-    puma (3.12.1)
+    puma (5.2.2)
+      nio4r (~> 2.0)
     rack (2.0.7)
     rack-proxy (0.6.5)
       rack
@@ -230,7 +231,7 @@ DEPENDENCIES
   capybara (>= 2.15)
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
-  puma (~> 3.11)
+  puma (~> 5.2)
   rails (~> 6.0.0.rc1)
   sass-rails (~> 5)
   selenium-webdriver