diff --git a/Gemfile b/Gemfile
old mode 100755
new mode 100644
index 6c8967f..50c00cf
--- a/Gemfile
+++ b/Gemfile
@@ -8,4 +8,4 @@ gem 'middleman-autoprefixer', '~> 2.7.0'
 gem 'middleman-sprockets', '~> 4.1.0'
 gem 'rouge', '~> 2.0.5'
 gem 'redcarpet', '~> 3.4.0'
-gem 'nokogiri', '~> 1.8.5'
+gem 'nokogiri', '~> 1.16.5'