diff --git a/Gemfile b/Gemfile
index b1219f8..a1710e4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ gem 'httparty', '~> 0.16.2'
 gem 'jbuilder', '~> 2.5'
 gem 'omniauth-google-oauth2'
 gem 'pg', '>= 0.18', '< 2.0'
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 gem 'sass-rails', '~> 5.0'
 gem 'turbolinks', '~> 5'
 gem 'tzinfo-data', platforms: %i[mingw mswin x64_mingw jruby]
diff --git a/Gemfile.lock b/Gemfile.lock
index a28dc48..95b7227 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -164,7 +164,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
-    puma (3.12.0)
+    puma (3.12.2)
     rack (2.0.6)
     rack-proxy (0.6.5)
       rack
@@ -310,7 +310,7 @@ DEPENDENCIES
   omniauth-google-oauth2
   pg (>= 0.18, < 2.0)
   pry
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.1)
   rspec-rails (~> 3.8)
   rspec_junit_formatter