diff --git a/railties/lib/rails/generators/rails/plugin/templates/gitignore.tt b/railties/lib/rails/generators/rails/plugin/templates/gitignore.tt
index bb47d87277..b14193224b 100644
--- a/railties/lib/rails/generators/rails/plugin/templates/gitignore.tt
+++ b/railties/lib/rails/generators/rails/plugin/templates/gitignore.tt
@@ -1,6 +1,7 @@
 /.bundle/
 /log/*.log
 /pkg/
+/tmp/
 <% if with_dummy_app? -%>
 <% if sqlite3? -%>
 /<%= dummy_path %>/db/*.sqlite3