diff --git a/W3D4/N+1_Buster/Gemfile b/W3D4/N+1_Buster/Gemfile
index 176c1e2..2a77ebe 100644
--- a/W3D4/N+1_Buster/Gemfile
+++ b/W3D4/N+1_Buster/Gemfile
@@ -11,7 +11,7 @@ gem 'rails', '~> 5.1.2'
 # Use postgresql as the database for Active Record
 gem 'pg', '~> 0.18'
 # 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/W3D4/N+1_Buster/Gemfile.lock b/W3D4/N+1_Buster/Gemfile.lock
index 68a9c15..25e183a 100644
--- a/W3D4/N+1_Buster/Gemfile.lock
+++ b/W3D4/N+1_Buster/Gemfile.lock
@@ -90,7 +90,7 @@ GEM
       mini_portile2 (~> 2.2.0)
     pg (0.21.0)
     public_suffix (2.0.5)
-    puma (3.9.1)
+    puma (3.12.4)
     rack (2.0.3)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -176,7 +176,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
   pg (~> 0.18)
-  puma (~> 3.7)
+  puma (~> 3.12)
   rails (~> 5.1.2)
   sass-rails (~> 5.0)
   selenium-webdriver