diff --git a/README.md b/README.md
index b73154b..d97d83e 100644
--- a/README.md
+++ b/README.md
@@ -1 +1 @@
-spec.add_development_dependency "rubocop-jekyll"
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+gem 'jekyll', '~> 4.3', '>= 4.3.4'
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