diff --git a/Gemfile b/Gemfile
index 37a8cb8..f937fc8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ end
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.2'
 # 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 d13b59b..68b7aa1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,7 +112,7 @@ GEM
     multi_json (1.15.0)
     multi_xml (0.6.0)
     mysql2 (0.4.10)
-    nio4r (2.5.8)
+    nio4r (2.5.9)
     nokogiri (1.13.10)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
@@ -141,7 +141,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     public_suffix (5.0.0)
-    puma (4.3.12)
+    puma (5.6.7)
       nio4r (~> 2.0)
     racc (1.6.1)
     rack (2.2.4)
@@ -243,7 +243,7 @@ DEPENDENCIES
   omniauth-google-oauth2 (~> 0.2.1)
   pg
   pry-rails
-  puma (~> 4.3)
+  puma (~> 5.6)
   rails (~> 5.2)
   record_tag_helper (~> 1.0)
   sass-rails (~> 5.0)