diff --git a/Gemfile b/Gemfile
index 1e2d310..5e9bf25 100644
--- a/Gemfile
+++ b/Gemfile
@@ -19,7 +19,7 @@ gem 'sqlite3', group: :development
 gem 'validates'
 
 # Use Puma as the app server
-gem 'puma', '~> 4.3'
+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 f3e7057..94726af 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,7 +88,7 @@ GEM
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
-    nio4r (2.5.8)
+    nio4r (2.5.9)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     parallel (1.17.0)
@@ -96,7 +96,7 @@ GEM
       ast (~> 2.4.0)
     pg (0.18.1)
     public_suffix (4.0.7)
-    puma (4.3.12)
+    puma (5.6.7)
       nio4r (~> 2.0)
     rack (2.2.6.4)
     rack-test (1.1.0)
@@ -222,7 +222,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
   pg (= 0.18.1)
-  puma (~> 4.3)
+  puma (~> 5.6)
   rails (~> 5.1.5)
   rails-i18n (~> 5.1)
   rails_12factor