diff --git a/Gemfile b/Gemfile
index 06f16bc..1e62028 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,6 +4,7 @@ source "https://rubygems.org"
 
 # gem "rails"
 gem "jekyll"
+gem "sassc", "< 2.2.0"
 
 group :jekyll_plugins do
   gem "jekyll-sass-converter", "< 3.0.0"