diff --git a/Gemfile b/Gemfile
index e13622f..fbdca9f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,7 +24,7 @@ gem 'rails', '~> 5.2.1'
 # Use postgresql as the database for Active Record
 gem 'pg', '>= 0.18', '< 2.0'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
diff --git a/Gemfile.lock b/Gemfile.lock
index b2b32f3..84dddc0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -134,7 +134,7 @@ GEM
     pg (1.1.4)
     popper_js (1.11.1)
     public_suffix (3.1.0)
-    puma (3.12.1)
+    puma (3.12.2)
     rack (2.0.7)
     rack-cache (1.9.0)
       rack (>= 0.4)
@@ -262,7 +262,7 @@ DEPENDENCIES
   nokogiri
   pg (>= 0.18, < 2.0)
   popper_js (~> 1.11.1)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rack (~> 2.0.1)
   rack-cache
   rails (~> 5.2.1)