diff --git a/Gemfile b/Gemfile
index 1f5be3f..952d9dc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
 
 gem 'mdl'
-gem 'nokogiri'
+gem 'nokogiri', '>= 1.10.5'
 gem 'rubocop', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index b73ee87..c90cec4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,9 +12,9 @@ GEM
     mixlib-cli (1.7.0)
     mixlib-config (2.2.18)
       tomlrb
-    nokogiri (1.10.4)
+    nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.4-x64-mingw32)
+    nokogiri (1.10.5-x64-mingw32)
       mini_portile2 (~> 2.4.0)
     parallel (1.18.0)
     parser (2.6.5.0)
@@ -37,8 +37,8 @@ PLATFORMS
 
 DEPENDENCIES
   mdl
-  nokogiri
+  nokogiri (>= 1.10.5)
   rubocop
 
 BUNDLED WITH
-   2.0.2
+   1.17.3