diff --git a/Gemfile b/Gemfile
index ecd4e86..fdcf117 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ ruby '2.5.1'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.2.0'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 gem 'rspec-rails'
 gem 'factory_bot_rails'
 gem 'active_model_serializers'
diff --git a/Gemfile.lock b/Gemfile.lock
index 99354d5..0cbbd46 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -111,7 +111,7 @@ GEM
       sawyer (~> 0.8.0, >= 0.5.3)
     pg (1.1.3)
     public_suffix (3.0.3)
-    puma (3.12.0)
+    puma (3.12.4)
     rack (2.0.5)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -198,7 +198,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   octokit (~> 4.0)
   pg
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.0)
   rspec-rails
   spring