diff --git a/Gemfile b/Gemfile
index 1424122..dd72b39 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,7 +13,7 @@ group :production do
   gem 'pg'
 end
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 5.6'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
diff --git a/Gemfile.lock b/Gemfile.lock
index 36d29c3..0b679df 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -123,7 +123,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.0331)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.8.0)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
@@ -138,7 +140,8 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.1.1)
-    puma (3.12.1)
+    puma (5.6.2)
+      nio4r (~> 2.0)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -262,7 +265,7 @@ DEPENDENCIES
   mini_magick (= 4.8.0)
   pg
   pry
-  puma (~> 3.11)
+  puma (~> 5.6)
   rails (~> 5.2.3)
   rspec-rails (~> 3)
   sass-rails (~> 5.0)