diff --git a/Gemfile b/Gemfile
index 23571f0..810610a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 5.2.1'
 # Use postgreSQL as the database for Active Record
 gem 'pg'
 # 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 781da4b..4584d0c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -211,7 +211,7 @@ GEM
     pg (1.1.4-x64-mingw32)
     popper_js (1.14.5)
     public_suffix (3.0.3)
-    puma (3.12.0)
+    puma (3.12.4)
     rack (2.0.6)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -371,7 +371,7 @@ DEPENDENCIES
   particles-js-rails (~> 2.0)
   pg
   popper_js (~> 1.14)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.1)
   rails-autocomplete
   rails-controller-testing