diff --git a/Gemfile b/Gemfile
index 4bd59a0..8cd62c5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ ruby '2.6.1'
 
 gem 'rails', '~> 5.2.3'
 gem 'pg', '>= 0.18', '< 2.0'
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 gem 'sass-rails', '~> 5.0'
 gem 'uglifier', '>= 1.3.0'
 gem 'coffee-rails', '~> 4.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 912d28f..02d7cbc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -123,7 +123,7 @@ GEM
     orm_adapter (0.5.0)
     pg (1.1.4)
     public_suffix (3.0.3)
-    puma (3.12.1)
+    puma (3.12.3)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -248,7 +248,7 @@ DEPENDENCIES
   jquery-rails
   listen (>= 3.0.5, < 3.2)
   pg (>= 0.18, < 2.0)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.3)
   redcarpet
   rspec-rails