diff --git a/LTI-Introduction/Gemfile b/LTI-Introduction/Gemfile
index b3ebd36..9771f09 100644
--- a/LTI-Introduction/Gemfile
+++ b/LTI-Introduction/Gemfile
@@ -31,7 +31,7 @@ gem 'jbuilder', '~> 2.5'
 # Use ActiveModel has_secure_password
 # gem 'bcrypt', '~> 3.1.7'
 # Nokogiri is an open source software library to parse HTML and XML in Ruby. Explicitly updated to counter security vulnerability.
-gem 'nokogiri', '~> 1.10.4'
+gem 'nokogiri', '~> 1.10.8'
 
 # Use Capistrano for deployment
 # gem 'capistrano-rails', group: :development
diff --git a/LTI-Introduction/Gemfile.lock b/LTI-Introduction/Gemfile.lock
index d7133a2..aa99ec2 100644
--- a/LTI-Introduction/Gemfile.lock
+++ b/LTI-Introduction/Gemfile.lock
@@ -93,7 +93,7 @@ GEM
     multi_json (1.13.1)
     mysql2 (0.4.10)
     nio4r (2.2.0)
-    nokogiri (1.10.4)
+    nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     public_suffix (3.0.2)
     rack (2.0.8)
@@ -187,7 +187,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
   mysql2
-  nokogiri (~> 1.10.4)
+  nokogiri (~> 1.10.8)
   rails (~> 5.1.4)
   sass-rails (~> 5.0)
   selenium-webdriver