diff --git a/Gemfile b/Gemfile
index 5448ab3..dca349c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 ruby '2.6.6'
 
 gem 'rails', '~> 5.2.4', '>= 5.2.4.2'
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 5.6'
 gem 'sass-rails', '~> 5.0'
 gem 'uglifier', '>= 1.3.0'
 gem 'coffee-rails', '~> 4.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index b31f518..0237131 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,7 +102,8 @@ GEM
     nio4r (2.5.2)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
-    puma (3.12.4)
+    puma (5.6.7)
+      nio4r (~> 2.0)
     raabro (1.1.6)
     rack (2.2.2)
     rack-protection (2.0.8.1)
@@ -222,7 +223,7 @@ DEPENDENCIES
   byebug
   coffee-rails (~> 4.2)
   jbuilder (~> 2.5)
-  puma (~> 3.11)
+  puma (~> 5.6)
   rails (~> 5.2.4, >= 5.2.4.2)
   resque (~> 1.27.4)
   resque-scheduler