diff --git a/commonshrc b/commonshrc
index b58611c..054f667 100644
--- a/commonshrc
+++ b/commonshrc
@@ -38,10 +38,9 @@ add_myprefix_to PKG_CONFIG_PATH lib/pkgconfig
 #add_myprefix_to PYTHONPATH lib/python/site-packages
 #add_myprefix_to PYTHONPATH lib/python
 
-add_myprefix_to RUBYLIB lib/ruby/site_ruby/1.8
-add_myprefix_to RUBYLIB lib/ruby/site_ruby/1.9.1
-add_to PATH ~/.gem/ruby/1.8/bin
-add_to PATH ~/.gem/ruby/1.9.1/bin
+for ruby_gem_path in ~/.gem/ruby/*/bin; do
+  add_to PATH $ruby_gem_path
+done
 
 add_myprefix_to PATH bin
 add_myprefix_to PATH sbin