diff --git a/Gemfile b/Gemfile
index befa313e0..f41a343e6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 gem 'rake', '13.0.3'
-gem 'asciidoctor', '2.0.12'
+gem 'asciidoctor', '2.0.13'
 
 gem 'json', '2.5.1'
 gem 'awesome_print', '1.9.2'