diff --git a/Gemfile b/Gemfile
index 2da2279..dfec78f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem 'fog',                     '1.38.0'
 gem 'will_paginate',           '3.1.6'
 gem 'bootstrap-will_paginate', '0.0.10'
 gem 'bootstrap-sass',          '3.3.6'
-gem 'puma',                    '3.10.0'
+gem 'puma',                    '3.12.4'
 gem 'sass-rails',              '5.0.6'
 gem 'uglifier',                '3.0.0'
 gem 'coffee-rails',            '4.2.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index fb3a8f0..3919e61 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -264,7 +264,7 @@ GEM
     pry (0.11.0)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
-    puma (3.10.0)
+    puma (3.12.4)
     rack (2.0.6)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -369,7 +369,7 @@ DEPENDENCIES
   mini_magick (= 4.5.1)
   minitest-reporters (= 1.1.9)
   pg (= 0.18.4)
-  puma (= 3.10.0)
+  puma (= 3.12.4)
   rails (= 5.0.7.1)
   rails-controller-testing (= 0.1.1)
   sass-rails (= 5.0.6)