diff --git a/Gemfile b/Gemfile
index 013486062..cf7a8d78f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -46,7 +46,7 @@ gem 'redcarpet', '~> 3.5.1', groups: [:markdown, :common_mark]
 # Optional CommonMark support, not for JRuby
 group :common_mark do
   gem "html-pipeline", "~> 2.13.2"
-  gem "commonmarker", (Gem.ruby_version < Gem::Version.new('2.6.0') ? '0.21.0' : '0.23.1')
+  gem "commonmarker", (Gem.ruby_version < Gem::Version.new('2.6.0') ? '0.21.0' : '0.23.4')
   gem "sanitize", "~> 6.0"
   gem 'deckar01-task_list', '2.3.2'
 end