diff --git a/Gemfile b/Gemfile
index 4c3cc6528..51e538c3a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,7 +22,7 @@ gem 'json'
 gem 'data_objects'
 gem 'rubyzip', '>= 1.2.2'
 gem 'espeak-ruby', '>= 1.0.4' # Text-to-Voice
-gem 'nokogiri', '>= 1.7'
+gem 'nokogiri', '>= 1.10.4'
 gem 'rake'
 
 # SQLite support