diff --git a/Gemfile b/Gemfile
index 101eb61..33855bd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ ruby '2.6.0'
 
 gem 'rails', '~> 5.2.3'
 gem 'pg'
-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 067fcce..c949b05 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -116,7 +116,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.1)
-    puma (3.12.2)
+    puma (3.12.3)
     rack (2.0.7)
     rack-protection (2.0.5)
       rack
@@ -239,7 +239,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   pg
   pry
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.3)
   rspec-rails (~> 3.8)
   sass-rails (~> 5.0)