diff --git a/appengine/rails-hello_world/Gemfile b/appengine/rails-hello_world/Gemfile
index 54de36ddd..0a88b093b 100644
--- a/appengine/rails-hello_world/Gemfile
+++ b/appengine/rails-hello_world/Gemfile
@@ -23,7 +23,7 @@ end
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem "rails", "~> 7.0"
 # Use Puma as the app server
-gem "puma", "~> 6.4"
+gem "puma", "~> 7.2"
 # Use SCSS for stylesheets
 gem "sassc-rails", "~> 2.1.2"
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
diff --git a/appengine/rails-hello_world/Gemfile.lock b/appengine/rails-hello_world/Gemfile.lock
index 18f3197ea..03a3142a2 100644
--- a/appengine/rails-hello_world/Gemfile.lock
+++ b/appengine/rails-hello_world/Gemfile.lock
@@ -143,7 +143,7 @@ GEM
       timeout
     net-smtp (0.4.0.1)
       net-protocol
-    nio4r (2.7.0)
+    nio4r (2.7.5)
     nokogiri (1.18.9)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
@@ -154,7 +154,7 @@ GEM
       date
       stringio
     public_suffix (5.0.3)
-    puma (6.4.2)
+    puma (7.2.1)
       nio4r (~> 2.0)
     racc (1.8.1)
     rack (2.2.20)
@@ -273,7 +273,7 @@ DEPENDENCIES
   capybara
   jbuilder (~> 2.11)
   listen (~> 3.8)
-  puma (~> 6.4)
+  puma (~> 7.2)
   rails (~> 7.0)
   rspec-rails
   rspec_junit_formatter