diff --git a/Gemfile b/Gemfile
index ceae015..cedd104 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,3 +5,4 @@ source "https://rubygems.org"
 git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
 gem "jekyll"
+gem "jekyll-theme-slate"