diff --git a/Gemfile b/Gemfile
index 6727136..008d3e7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.1'
 # Use mysql as the database for Active Record
 gem 'mysql2', '>= 0.4.4'
 # Use Puma as the app server
-gem 'puma', '~> 4.3'
+gem 'puma', '~> 5.5'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.7'
 # Use Redis adapter to run Action Cable in production
diff --git a/Gemfile.lock b/Gemfile.lock
index 6d071f5..f9125c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -101,14 +101,14 @@ GEM
     minitest (5.14.1)
     msgpack (1.3.3)
     mysql2 (0.5.3)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.5)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     parallel (1.19.1)
     parser (2.7.1.3)
       ast (~> 2.4.0)
-    puma (4.3.8)
+    puma (5.5.1)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -228,7 +228,7 @@ DEPENDENCIES
   factory_bot_rails
   listen (>= 3.0.5, < 3.2)
   mysql2 (>= 0.4.4)
-  puma (~> 4.3)
+  puma (~> 5.5)
   rack-cors
   rails (~> 6.0.1)
   rspec-rails