@@ -1,12 +1,45 @@
-/.bundle/
-/.yardoc
-/Gemfile.lock
-/_yardoc/
-/coverage/
-/doc/
+# Build Artifacts
 /pkg/
-/spec/reports/
 /tmp/
+*.gem
 
-# rspec failure tracking
+# Bundler
+/.bundle/
+/gemfiles/*.lock
+/gemfiles/.bundle/
+/gemfiles/.bundle/config
+/gemfiles/vendor/
+Appraisal.*.gemfile.lock
+
+# Specs
 .rspec_status
+/coverage/
+/spec/reports/
+/results/
+
+# Documentation
+/.yardoc/
+/_yardoc/
+/rdoc/
+/doc/
+
+# Ruby Version Managers (RVM, rbenv, etc)
+# Ignored because we currently use .tool-versions
+.rvmrc
+.ruby-version
+.ruby-gemset
+
+# Benchmarking
+/measurement/
+
+# Debugger detritus
+.byebug_history
+
+# direnv - brew install direnv
+.env.local
+
+# OS Detritus
+.DS_Store
+
+# Editors
+*~