diff --git a/rails/strawpoll/Gemfile b/rails/strawpoll/Gemfile
index 0e16d4c..af97c92 100644
--- a/rails/strawpoll/Gemfile
+++ b/rails/strawpoll/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.0.beta2'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.3', '>= 1.3.6'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
diff --git a/rails/strawpoll/Gemfile.lock b/rails/strawpoll/Gemfile.lock
index f8e4e24..5f4a5bd 100644
--- a/rails/strawpoll/Gemfile.lock
+++ b/rails/strawpoll/Gemfile.lock
@@ -111,7 +111,7 @@ GEM
     nokogiri (1.10.1)
       mini_portile2 (~> 2.4.0)
     public_suffix (3.0.3)
-    puma (3.12.0)
+    puma (3.12.4)
     rack (2.0.6)
     rack-proxy (0.6.5)
       rack
@@ -211,7 +211,7 @@ DEPENDENCIES
   chromedriver-helper
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 6.0.0.beta2)
   sass-rails (~> 5.0)
   selenium-webdriver