diff --git a/Jekyll.gitignore b/Jekyll.gitignore
index 2ca868298ced3ff66aa1a7a42a23c3360d11ef41..74a9223a450d467a8067d8e03acc241a3dd8d963 100644
--- a/Jekyll.gitignore
+++ b/Jekyll.gitignore
@@ -2,3 +2,6 @@ _site/
 .sass-cache/
 .jekyll-cache/
 .jekyll-metadata
+# Ignore folders generated by Bundler
+.bundle/
+vendor/