diff --git a/Gemfile b/Gemfile
index aa31340..c38821d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,6 +9,7 @@ gem 'webpacker', '~> 5.0'
 gem 'turbolinks', '~> 5'
 gem 'jbuilder', '~> 2.7'
 gem 'bootsnap', '>= 1.4.4', require: false
+gem 'puma', '~> 5.0'
 
 group :development, :test do
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
diff --git a/Gemfile.lock b/Gemfile.lock
index 9c5598a..61d9ed6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -127,6 +127,8 @@ GEM
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
     public_suffix (4.0.6)
+    puma (5.5.2)
+      nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)
     rack-mini-profiler (2.3.3)
@@ -254,6 +256,7 @@ DEPENDENCIES
   listen (~> 3.3)
   midi-smtp-server (~> 3.0)
   mysql2 (>= 0.5)
+  puma (~> 5.0)
   rack-mini-profiler (~> 2.0)
   rails (~> 6.1.4, >= 6.1.4.4)
   roo