diff --git a/lib/theme_template/gitignore.erb b/lib/theme_template/gitignore.erb
index 64eb653f..867d3792 100644
--- a/lib/theme_template/gitignore.erb
+++ b/lib/theme_template/gitignore.erb
@@ -1,3 +1,4 @@
+*.gem
 .bundle
 .sass-cache
 _site