diff --git a/Library/Homebrew/vendor/Gemfile.lock b/Library/Homebrew/vendor/Gemfile.lock
index 004c2b48ff..7dba7589fb 100644
--- a/Library/Homebrew/vendor/Gemfile.lock
+++ b/Library/Homebrew/vendor/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.2)
     minitest (5.11.3)
-    parallel (1.12.1)
+    parallel (1.13.0)
     parser (2.6.0.0)
       ast (~> 2.4.0)
     plist (3.5.0)
diff --git a/Library/Homebrew/vendor/bundle-standalone/bundler/setup.rb b/Library/Homebrew/vendor/bundle-standalone/bundler/setup.rb
index 6c86ad5daf..7db420ea56 100644
--- a/Library/Homebrew/vendor/bundle-standalone/bundler/setup.rb
+++ b/Library/Homebrew/vendor/bundle-standalone/bundler/setup.rb
@@ -14,7 +14,7 @@ $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/backports-3.11.4/lib"
 $:.unshift "#{path}/"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/extensions/universal-darwin-18/2.3.0/jaro_winkler-1.5.2"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/jaro_winkler-1.5.2/lib"
-$:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/parallel-1.12.1/lib"
+$:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/parallel-1.13.0/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/parser-2.6.0.0/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/plist-3.5.0/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/powerpack-0.1.2/lib"