diff --git a/Gemfile b/Gemfile
index 65990d4..97552dc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,7 +15,7 @@ gem 'pg', group: :production
 gem 'rails_12factor', group: :production
 
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 # 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 320e844..a294c92 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -149,7 +149,7 @@ GEM
       activerecord (>= 5.2.1)
     popper_js (1.14.5)
     public_suffix (4.0.1)
-    puma (3.12.1)
+    puma (3.12.6)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -274,7 +274,7 @@ DEPENDENCIES
   mini_racer
   momentjs-rails
   pg
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.3)
   rails_12factor
   ransack