diff --git a/testProject/Gemfile b/testProject/Gemfile
index b5fbf94..328ac2c 100644
--- a/testProject/Gemfile
+++ b/testProject/Gemfile
@@ -11,7 +11,7 @@ gem 'rails', '~> 5.0.2'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 # Use Puma as the app server
-gem 'puma', '~> 3.0'
+gem 'puma', '~> 3.12'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
diff --git a/testProject/Gemfile.lock b/testProject/Gemfile.lock
index 21ab0ce..e3d153f 100644
--- a/testProject/Gemfile.lock
+++ b/testProject/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
     nio4r (2.0.0)
     nokogiri (1.7.0.1)
       mini_portile2 (~> 2.1.0)
-    puma (3.8.2)
+    puma (3.12.6)
     rack (2.0.1)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -159,7 +159,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   jquery-rails
   listen (~> 3.0.5)
-  puma (~> 3.0)
+  puma (~> 3.12)
   rails (~> 5.0.2)
   sass-rails (~> 5.0)
   spring