diff --git a/lib/linguist/vendor.yml b/lib/linguist/vendor.yml
index c497960c..3911e4c9 100644
--- a/lib/linguist/vendor.yml
+++ b/lib/linguist/vendor.yml
@@ -112,6 +112,10 @@
 - (^|/)modernizr\-\d\.\d+(\.\d+)?(\.min)?\.js$
 - (^|/)modernizr\.custom\.\d+\.js$
 
+# Knockout
+- (^|/)knockout-(\d+\.){3}(debug\.)?js$
+- knockout-min.js
+
 ## Python ##
 
 # django