diff --git a/Gemfile b/Gemfile
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,3 @@
 source "https://rubygems.org"
 
-gem "jekyll-theme-doctored", "~> 0.3.20"
+gem "jekyll-theme-doctored", "~> 0.3.21"