diff --git a/Calculator-LTI/Gemfile b/Calculator-LTI/Gemfile
index aa84986..7e32694 100644
--- a/Calculator-LTI/Gemfile
+++ b/Calculator-LTI/Gemfile
@@ -30,7 +30,7 @@ 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', '~> 1.10.10'
 
 # Use Capistrano for deployment
 # gem 'capistrano-rails', group: :development
diff --git a/Calculator-LTI/Gemfile.lock b/Calculator-LTI/Gemfile.lock
index 48cf2e7..33f4d00 100644
--- a/Calculator-LTI/Gemfile.lock
+++ b/Calculator-LTI/Gemfile.lock
@@ -94,7 +94,7 @@ GEM
     minitest (5.10.3)
     multi_json (1.12.2)
     nio4r (2.1.0)
-    nokogiri (1.10.4)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     oauth (0.5.3)
     public_suffix (3.0.0)
@@ -194,7 +194,7 @@ DEPENDENCIES
   ims-lti (~> 1.1.8)
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
-  nokogiri (~> 1.10.4)
+  nokogiri (~> 1.10.10)
   puma (~> 4.3)
   rails (~> 5.1.4)
   sass-rails (~> 5.0)