diff --git a/Gemfile b/Gemfile
index 07eb5a4..7fc3d83 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ 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 fb540aa..620142d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -121,7 +121,7 @@ GEM
       mimemagic (~> 0.3.0)
       terrapin (~> 0.6.0)
     public_suffix (4.0.1)
-    puma (3.12.1)
+    puma (3.12.3)
     rack (2.0.7)
     rack-proxy (0.6.5)
       rack
@@ -232,7 +232,7 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   listen (>= 3.0.5, < 3.2)
   paperclip (~> 6.0.0)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 6.0.0)
   sass-rails (~> 5)
   selenium-webdriver