diff --git a/Gemfile b/Gemfile
index 51c5223..1938385 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-gem "jekyll", "~> 3.1.6"
+gem "jekyll", "~> 4.2.0"
 
 # Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem and associated library.
 platforms :mingw, :x64_mingw, :mswin, :jruby do