diff --git a/lib/rdoc/Gemfile b/lib/rdoc/Gemfile
deleted file mode 100644
index b7bd49a8cf..0000000000
--- a/lib/rdoc/Gemfile
+++ /dev/null
@@ -1,12 +0,0 @@
-source 'https://rubygems.org'
-
-gemspec
-
-group :development do
-  gem 'rake'
-  gem 'racc', '> 1.4.10'
-  gem 'kpeg', github: 'evanphx/kpeg'
-  gem 'test-unit'
-  gem 'rubocop'
-  gem 'gettext'
-end