diff --git a/.gitignore b/.gitignore
index 0b09c01..0b1620d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 /_site/
 *.DS_Store
 node_modules
+vendor
+.bundle
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 2d13345..2e3c849 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -66,7 +66,7 @@ included in the project:
 
     ```bash
     # Install the needed gems through Bundler
-    bundle install
+    bundle install --path vendor/bundle
     # Run the local server
     bundle exec jekyll serve
     ```
diff --git a/_config.yml b/_config.yml
index fc11760..908205f 100644
--- a/_config.yml
+++ b/_config.yml
@@ -19,6 +19,6 @@ defaults:
       values:
           sitemap: false
 
-exclude: ['CNAME', 'CONTRIBUTING.md', 'LICENSE', 'README.md', 'pages/example.md']
+exclude: ['CNAME', 'CONTRIBUTING.md', 'LICENSE', 'README.md', 'pages/example.md', 'vendor']
 
 future: true