diff --git a/Gemfile b/Gemfile
index f1fd910..51ae66e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem 'rails-i18n', '~> 6.0.0'
 # Use mysql as the database for Active Record
 gem 'mysql2', '>= 0.4.4', '< 0.6.0'
 # Use Puma as the app server
-gem 'puma', '~> 4.0'
+gem 'puma', '~> 4.3'
 
 gem 'devise', '~> 4.7'
 gem 'devise-i18n', '~> 1.8'
diff --git a/Gemfile.lock b/Gemfile.lock
index d4d903e..40a5e05 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -224,7 +224,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     public_suffix (4.0.1)
-    puma (4.2.1)
+    puma (4.3.5)
       nio4r (~> 2.0)
     pundit (1.1.0)
       activesupport (>= 3.0.0)
@@ -399,7 +399,7 @@ DEPENDENCIES
   open4
   pry-byebug
   pry-rails
-  puma (~> 4.0)
+  puma (~> 4.3)
   pundit (~> 1.1)
   rack-contrib
   rails (= 6.0.3.2)