diff --git a/.npmignore b/.npmignore
index 23aee3393..02c82644f 100644
--- a/.npmignore
+++ b/.npmignore
@@ -9,3 +9,9 @@ perf/*.sh
 test/*.html
 test/*-ui.js
 test/*.sh
+vendor/backbone/
+vendor/docdown/
+vendor/qunit/qunit/*.css
+vendor/underscore/
+vendor/requirejs/
+vendor/firebug-lite/