diff --git a/Gemfile b/Gemfile
index 8997582..15b2968 100644
--- a/Gemfile
+++ b/Gemfile
@@ -21,7 +21,7 @@ group :production do
   gem 'pg'
 end
 # Use Puma as the app server
-gem 'puma', '~> 3.7'
+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 ac1fb6c..1531750 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,7 +102,7 @@ GEM
       mini_portile2 (~> 2.2.0)
     pg (0.21.0)
     public_suffix (3.0.0)
-    puma (3.10.0)
+    puma (3.12.6)
     rack (2.0.3)
     rack-test (0.7.0)
       rack (>= 1.0, < 3)
@@ -199,7 +199,7 @@ DEPENDENCIES
   jquery-rails
   listen (>= 3.0.5, < 3.2)
   pg
-  puma (~> 3.7)
+  puma (~> 3.12)
   rails (~> 5.1.3)
   rails-bootstrap-markdown
   redcarpet