diff --git a/Gemfile b/Gemfile
index 05ce613..447afae 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ gem 'rails', '~> 5.1.6'
 # Use pg instead
 gem 'pg', '~> 0.18.4'
 # 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 7f1cd11..3506048 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -170,7 +170,7 @@ GEM
       i18n (>= 0.5.0)
       railties (>= 3.0.0)
     public_suffix (4.0.1)
-    puma (3.12.1)
+    puma (3.12.3)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -305,7 +305,7 @@ DEPENDENCIES
   oink
   pg (~> 0.18.4)
   public_activity
-  puma (~> 3.7)
+  puma (~> 3.12)
   rails (~> 5.1.6)
   redis (~> 4.0, >= 4.0.1)
   rolify