diff --git a/Gemfile b/Gemfile
index 4f383db..57fea15 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem 'rails', '~> 6.0.2', '>= 6.0.2.1'
 # Use mysql as the database for Active Record
 gem 'mysql2', '>= 0.4.4'
 # Use Puma as the app server
-gem 'puma', '~> 4.1'
+gem 'puma', '~> 4.3'
 # Use SCSS for stylesheets
 gem 'sass-rails', '>= 6'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
diff --git a/Gemfile.lock b/Gemfile.lock
index cd06e5e..3602965 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -104,17 +104,19 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (1.0.0)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
     msgpack (1.3.3)
     mysql2 (0.5.3)
-    nio4r (2.5.2)
+    nio4r (2.5.7)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     public_suffix (4.0.5)
-    puma (4.3.5)
+    puma (4.3.8)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-proxy (0.6.5)
@@ -218,7 +220,7 @@ DEPENDENCIES
   jquery-rails
   listen (>= 3.0.5, < 3.2)
   mysql2 (>= 0.4.4)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.2, >= 6.0.2.1)
   sass-rails (>= 6)
   selenium-webdriver