diff --git a/Gemfile b/Gemfile
index 042659c..e55d2cf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem 'fog',                     '1.38.0'
 gem 'will_paginate',           '3.1.0'
 gem 'bootstrap-will_paginate', '0.0.10'
 gem 'bootstrap-sass',          '3.3.6'
-gem 'puma',                    '3.4.0'
+gem 'puma',                    '3.12.2'
 gem 'sass-rails',              '5.0.5'
 gem 'uglifier',                '3.0.0'
 gem 'coffee-rails',            '4.2.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index 1a02f8f..6cc4e1d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -267,7 +267,7 @@ GEM
     pry-byebug (3.4.0)
       byebug (~> 9.0)
       pry (~> 0.10)
-    puma (3.4.0)
+    puma (3.12.2)
     rack (2.0.1)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -371,7 +371,7 @@ DEPENDENCIES
   pg (= 0.18.4)
   pry
   pry-byebug
-  puma (= 3.4.0)
+  puma (= 3.12.2)
   rails (= 5.0.0)
   rails-controller-testing (= 0.1.1)
   sass-rails (= 5.0.5)