diff --git a/Gemfile b/Gemfile
index 62eb453..648f362 100644
--- a/Gemfile
+++ b/Gemfile
@@ -21,7 +21,7 @@ gem 'jbuilder', '~> 2.5'
 gem 'jquery-rails', '~> 4.3', '>= 4.3.3'
 gem 'mailjet'
 gem 'pg', '>= 0.18', '< 2.0'
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 gem 'rails', '~> 5.2.1', '>= 5.2.1.1'
 gem 'sass-rails', '~> 5.0'
 gem 'sidekiq', '~> 5.2.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index e318392..f3f9672 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -179,7 +179,7 @@ GEM
     pry-byebug (3.7.0)
       byebug (~> 11.0)
       pry (~> 0.10)
-    puma (3.12.1)
+    puma (3.12.4)
     rack (2.0.7)
     rack-protection (2.0.5)
       rack
@@ -351,7 +351,7 @@ DEPENDENCIES
   nyan-cat-formatter
   pg (>= 0.18, < 2.0)
   pry-byebug (~> 3.6)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.1, >= 5.2.1.1)
   rspec-rails (~> 3.7, >= 3.7.2)
   rspec_in_context