diff --git a/modules/swagger-codegen/src/main/resources/rails5/Gemfile b/modules/swagger-codegen/src/main/resources/rails5/Gemfile
index a46942406d1..c93538b52f2 100644
--- a/modules/swagger-codegen/src/main/resources/rails5/Gemfile
+++ b/modules/swagger-codegen/src/main/resources/rails5/Gemfile
@@ -6,7 +6,7 @@ gem 'rails', '~> 5.0.0'
 # Use mysql as the database for Active Record
 gem 'mysql2', '>= 0.3.18', '< 0.5'
 # Use Puma as the app server
-gem 'puma', '~> 3.0'
+gem 'puma', '~> 6.0'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.0'
 # Use Redis adapter to run Action Cable in production
diff --git a/samples/server/petstore/rails5/Gemfile b/samples/server/petstore/rails5/Gemfile
index a46942406d1..c93538b52f2 100644
--- a/samples/server/petstore/rails5/Gemfile
+++ b/samples/server/petstore/rails5/Gemfile
@@ -6,7 +6,7 @@ gem 'rails', '~> 5.0.0'
 # Use mysql as the database for Active Record
 gem 'mysql2', '>= 0.3.18', '< 0.5'
 # Use Puma as the app server
-gem 'puma', '~> 3.0'
+gem 'puma', '~> 6.0'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.0'
 # Use Redis adapter to run Action Cable in production