diff --git a/Gemfile b/Gemfile
index 4d63b1ab..ea3209af 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,4 +10,5 @@ gem 'csv'
 gem 'ostruct'
 gem 'base64'
 gem 'bigdecimal'
-gem 'wdm'
\ No newline at end of file
+gem 'wdm'
+gem 'jekyll-katex'