diff --git a/.gitignore b/.gitignore
index 75700d3..b7255a4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,3 +22,26 @@ tmtags
 /.yardoc
 
 ## PROJECT::SPECIFIC
+*.gem
+*.rbc
+/.config
+/coverage/
+/InstalledFiles
+/pkg/
+/spec/reports/
+/spec/examples.txt
+/test/tmp/
+/test/version_tmp/
+/tmp/
+
+## Documentation cache and generated files:
+/.yardoc/
+/_yardoc/
+/doc/
+/rdoc/
+
+## Environment normalization:
+/.bundle/
+/vendor/bundle
+/lib/bundler/man/
+