diff --git a/Gemfile b/Gemfile
old mode 100755
new mode 100644
index b1311616dd..446a2b8d66
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ require 'json'
 require 'open-uri'
 versions = JSON.parse(open('https://pages.github.com/versions.json').read)
 
-gem 'github-pages', versions['github-pages']
+gem 'github-pages', '>= 210', versions['github-pages']
 
 gem "rake", "~> 13.0"