diff --git a/Gemfile b/Gemfile
index beb46e7..b4610bf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -28,7 +28,7 @@ gem 'rails', '~> 6.0.0'
 # Use sqlite3 as the database for Active Record
 #gem 'sqlite3', '~> 1.4'
 # Use Puma as the app server
-gem 'puma', '~> 3.12'
+gem 'puma', '~> 4.3'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
diff --git a/Gemfile.lock b/Gemfile.lock
index 152ef64..98c7eeb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -141,7 +141,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.12.2)
@@ -170,7 +172,8 @@ GEM
     orm_adapter (0.5.0)
     pg (1.1.4)
     public_suffix (4.0.1)
-    puma (3.12.4)
+    puma (4.3.11)
+      nio4r (~> 2.0)
     rack (2.0.8)
     rack-proxy (0.6.5)
       rack
@@ -291,7 +294,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   omniauth-discord
   pg
-  puma (~> 3.12)
+  puma (~> 4.3)
   rails (~> 6.0.0)
   rails-perftest
   ransack!