diff --git a/.gitignore b/.gitignore
index 5a8b792..55f1e75 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,19 +1,15 @@
-.bundle
-.config
-coverage
-doc/
-*.gem
-Gemfile.lock
-InstalledFiles
-Kookfile
-lib/bundler/man
-pkg
-*.rbc
-rdoc
-spec/reports
-test/tmp
-test/version_tmp
-tmp
-vendor
-_yardoc
-.yardoc
+*.a
+/.bundle/
+/coverage/
+/doc/
+/Gemfile.lock
+/Kookfile
+mkmf.log
+*.o
+/pkg/
+*.so
+/spec/reports/
+/tmp/
+/vendor/
+/_yardoc/
+/.yardoc