diff --git a/Gemfile b/Gemfile
index 91e97ee..75f296d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -35,7 +35,7 @@ end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
-gem 'pygments.rb', '~> 2.4.0'
+gem 'pygments.rb', '~> 4.0.0'
 
 # Performance-booster for watching directories on Windows
 gem "wdm", "~> 0.1.0" if Gem.win_platform?
diff --git a/Gemfile.lock b/Gemfile.lock
index 9e28759..2253866 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,7 +131,7 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (5.0.3)
-    pygments.rb (2.4.0)
+    pygments.rb (4.0.0)
     racc (1.7.1)
     rainbow (3.1.1)
     rake (13.3.1)
@@ -180,7 +180,7 @@ DEPENDENCIES
   jekyll-sass-converter (~> 2.2)
   jekyll-theme-clean-blog!
   jekyll-webmention_io!
-  pygments.rb (~> 2.4.0)
+  pygments.rb (~> 4.0.0)
   rake
   tzinfo-data