diff --git a/W3D4/Movie_Buff_in_Training/Gemfile b/W3D4/Movie_Buff_in_Training/Gemfile
index b953711..ef98272 100644
--- a/W3D4/Movie_Buff_in_Training/Gemfile
+++ b/W3D4/Movie_Buff_in_Training/Gemfile
@@ -11,7 +11,7 @@ gem 'rails', '~> 5.1.2'
 # Use postgresql as the database for Active Record
 gem 'pg', '>= 1.0.0'
 # 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/Movie_Buff_in_Training/Gemfile.lock b/W3D4/Movie_Buff_in_Training/Gemfile.lock
index edfbbe1..870814f 100644
--- a/W3D4/Movie_Buff_in_Training/Gemfile.lock
+++ b/W3D4/Movie_Buff_in_Training/Gemfile.lock
@@ -95,7 +95,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     pg (1.1.4)
     public_suffix (3.1.0)
-    puma (3.12.1)
+    puma (3.12.4)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -208,7 +208,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
   pg (>= 1.0.0)
-  puma (~> 3.7)
+  puma (~> 3.12)
   rails (~> 5.1.2)
   rspec-rails (~> 3.5)
   sass-rails (~> 5.0)