diff --git a/ext/psych/psych.gemspec b/ext/psych/psych.gemspec
index 44491c801e..a7a6a551b9 100644
--- a/ext/psych/psych.gemspec
+++ b/ext/psych/psych.gemspec
@@ -25,7 +25,7 @@ DESCRIPTION
 
   # for ruby core repository. It was generated by `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   s.files = [
-    ".gitignore", ".travis.yml", "CHANGELOG.rdoc", "Gemfile", "Mavenfile", "README.md", "Rakefile", "bin/console",
+    ".gitignore", ".travis.yml", "Gemfile", "Mavenfile", "README.md", "Rakefile", "bin/console",
     "bin/setup", "ext/psych/depend", "ext/psych/extconf.rb", "ext/psych/psych.c", "ext/psych/psych.h",
     "ext/psych/psych_emitter.c", "ext/psych/psych_emitter.h", "ext/psych/psych_parser.c", "ext/psych/psych_parser.h",
     "ext/psych/psych_to_ruby.c", "ext/psych/psych_to_ruby.h", "ext/psych/psych_yaml_tree.c", "ext/psych/psych_yaml_tree.h",