diff --git a/Gemfile b/Gemfile
index be48f7b..8cb5edb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'rails', '~> 6.1'
 # Use postgresql as the database for Active Record
 gem 'pg', '>= 0.18', '< 2.0'
 # Use Puma as the app server
-gem 'puma', '~> 4.3.12'
+gem 'puma', '~> 5.6.7'
 # Use Redis adapter to run Action Cable in production
 # gem 'redis', '~> 4.0'
 # Use Active Model has_secure_password
diff --git a/Gemfile.lock b/Gemfile.lock
index 7fcb002..ddb43e7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -173,7 +173,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (5.0.1)
-    puma (4.3.12)
+    puma (5.6.7)
       nio4r (~> 2.0)
     pundit (2.3.0)
       activesupport (>= 3.0.0)
@@ -307,7 +307,7 @@ DEPENDENCIES
   net-pop
   net-smtp
   pg (>= 0.18, < 2.0)
-  puma (~> 4.3.12)
+  puma (~> 5.6.7)
   pundit (~> 2.2)
   rack-cors
   rails (~> 6.1)