diff --git a/Gemfile b/Gemfile
index 05b768e..42b0f9c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
 source 'https://rubygems.org' 
 
-gem 'nokogiri', '~> 1.8.1'
+gem 'nokogiri', '~> 1.11.4'
 gem 'rspec', '3.7.0', :group => :development
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index 3f5b8d5..3686315 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,9 +2,11 @@ GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.3)
-    mini_portile2 (2.3.0)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    mini_portile2 (2.5.1)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    racc (1.5.2)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)
       rspec-expectations (~> 3.7.0)
@@ -23,8 +25,8 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  nokogiri (~> 1.8.1)
+  nokogiri (~> 1.11.4)
   rspec (= 3.7.0)
 
 BUNDLED WITH
-   1.15.4
+   1.17.3