diff --git a/Gemfile b/Gemfile
index 7c3306b..dc27977 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,3 +4,5 @@ ruby "2.5.1"
 gem "nokogiri"
 gem "jekyll"
 gem "jekyll-scholar", group: :jekyll_plugins
+gem "kramdown", ">= 2.3.1"
+