diff --git a/Gemfile b/Gemfile
index b6f6d113..bd2eb051 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ gem "coffee-rails"
 gem "devise"
 gem "faker", :git => "https://github.com/stympy/faker.git", :branch => "master"
 gem "jbuilder", "~> 2.5"
-gem "puma", "~> 3.7"
+gem "puma", "~> 3.12"
 gem "rails", "~> 5.1.5"
 gem "sass-rails", "~> 5.0"
 gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
diff --git a/Gemfile.lock b/Gemfile.lock
index a9c81679..7a2144d3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -228,7 +228,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     public_suffix (3.1.1)
-    puma (3.12.1)
+    puma (3.12.4)
     rack (2.0.7)
     rack-contrib (2.1.0)
       rack (~> 2.0)
@@ -397,7 +397,7 @@ DEPENDENCIES
   meta_request
   pg
   pry-rails
-  puma (~> 3.7)
+  puma (~> 3.12)
   rails (~> 5.1.5)
   rails_12factor
   rspec-html-matchers