diff --git a/Gemfile b/Gemfile
index cedd104..492917b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,5 +4,8 @@ source "https://rubygems.org"
 
 git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
-gem "jekyll"
+gem "bundler"
+gem "jekyll", ">= 3.8.4"
 gem "jekyll-theme-slate"
+gem "jekyll-paginate"
+gem "jekyll-sitemap"