diff --git a/_config.yml b/_config.yml
index 17b2172..c8033f1 100644
--- a/_config.yml
+++ b/_config.yml
@@ -20,3 +20,7 @@ collections:
     permalink: /blog/:title/
   clients:
     output: false
+exclude:
+  - vendor
+  - Gemfile
+  - Gemfile.lock