diff --git a/Gemfile b/Gemfile
index 6d6a0e1..742854b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.0'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.4'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
diff --git a/Gemfile.lock b/Gemfile.lock
index 75c1a73..ff917e6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -104,7 +104,7 @@ GEM
     nokogiri (1.11.1-x64-mingw32)
       racc (~> 1.4)
     public_suffix (4.0.1)
-    puma (3.12.1)
+    puma (3.12.6)
     racc (1.5.2)
     rack (2.0.7)
     rack-proxy (0.6.5)
@@ -204,7 +204,7 @@ DEPENDENCIES
   byebug
   capybara (>= 2.15)
   jbuilder (~> 2.7)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 6.0.0)
   sass-rails (~> 5)
   selenium-webdriver