diff --git a/Library/Homebrew/vendor/bundle/bundler/setup.rb b/Library/Homebrew/vendor/bundle/bundler/setup.rb
index 482480f119..631378ff1f 100644
--- a/Library/Homebrew/vendor/bundle/bundler/setup.rb
+++ b/Library/Homebrew/vendor/bundle/bundler/setup.rb
@@ -64,7 +64,7 @@ $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/patchelf-1.3.0/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/plist-3.6.0/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/pry-0.14.1/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/rack-2.2.3/lib"
-$:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/unparser-0.6.3/lib"
+$:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/unparser-0.6.4/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/rbi-0.0.12/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/extensions/x86_64-darwin-14/2.6.0-static/rdiscount-2.2.0.2"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/rdiscount-2.2.0.2/lib"