diff --git a/Gemfile b/Gemfile
index cab8f53..87d97eb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'rails', '~> 6.0.2', '>= 6.0.2.1'
 # Use postgresql as the database for Active Record
 gem 'pg', '>= 0.18', '1.2.2'
 # 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 7d7a292..82c2fca 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -155,14 +155,16 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.4)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.10.1)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.0)
     msgpack (1.3.3)
     net-ssh (5.2.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
@@ -175,7 +177,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.3)
-    puma (4.3.1)
+    puma (4.3.11)
       nio4r (~> 2.0)
     pundit (1.1.0)
       activesupport (>= 3.0.0)
@@ -346,7 +348,7 @@ DEPENDENCIES
   pg (>= 0.18, = 1.2.2)
   popper_js (~> 1.14.5)
   pry
-  puma (~> 4.1)
+  puma (~> 4.3)
   pundit (~> 1.1)
   rack-cors (~> 1.1, >= 1.1.1)
   rails (~> 6.0.2, >= 6.0.2.1)