diff --git a/.gitignore b/.gitignore
index ac1c8e974d..9498ad6a22 100644
--- a/.gitignore
+++ b/.gitignore
@@ -117,6 +117,7 @@
 **/vendor/bundle/ruby/*/gems/powerpack-*/
 **/vendor/bundle/ruby/*/gems/psych-*/
 **/vendor/bundle/ruby/*/gems/pry-*/
+**/vendor/bundle/ruby/*/gems/racc-*/
 **/vendor/bundle/ruby/*/gems/rainbow-*/
 **/vendor/bundle/ruby/*/gems/rdiscount-*/
 **/vendor/bundle/ruby/*/gems/regexp_parser-*/