diff --git a/deploy/Gemfile b/deploy/Gemfile
index d789462..666ef28 100644
--- a/deploy/Gemfile
+++ b/deploy/Gemfile
@@ -4,14 +4,14 @@ require 'json'
 require 'open-uri'
 versions = JSON.parse(open('./versions.json').read)
 
-gem 'github-pages', versions['github-pages'], group: :jekyll_plugins
+gem 'github-pages', '>= 214', versions['github-pages'], group: :jekyll_plugins
 
 # If you have any plugins, put them here!
 group :jekyll_plugins do
   gem 'rouge', versions['rouge']
-  gem 'jekyll-mentions', versions['jekyll-mentions']
-  gem 'jekyll-sitemap', versions['jekyll-sitemap']
-  gem 'jekyll-gist', versions['jekyll-gist']
+  gem 'jekyll-mentions', '>= 1.5.1', versions['jekyll-mentions']
+  gem 'jekyll-sitemap', '>= 1.4.0', versions['jekyll-sitemap']
+  gem 'jekyll-gist', '>= 1.5.0', versions['jekyll-gist']
   gem 'jekyll-paginate', versions['jekyll-paginate']
-  gem 'html-proofer'
+  gem 'html-proofer', '>= 3.15.3'
 end