diff --git a/Gemfile b/Gemfile
index 80375b2..f2dd321 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ group :development do
   gem 'rack', '3.2.4'
   gem 'jekyll', '4.4.1'
   gem 'rdiscount', '2.2.7.3'
-  gem 'pygments.rb', '3.0.0'
+  gem 'pygments.rb', '4.0.0'
   gem 'RedCloth', '4.3.4'
   gem 'haml', '7.0.2'
   gem 'compass', '1.0.3'