diff --git a/lib/linguist/vendor.yml b/lib/linguist/vendor.yml
index 938bfa10..875a734b 100644
--- a/lib/linguist/vendor.yml
+++ b/lib/linguist/vendor.yml
@@ -153,6 +153,9 @@
 - (^|/)tiny_mce([^.]*)\.js$
 - (^|/)tiny_mce/(langs|plugins|themes|utils)
 
+# Ace Editor
+- (^|/)ace-builds/
+
 # MathJax
 - (^|/)MathJax/
 
diff --git a/test/test_file_blob.rb b/test/test_file_blob.rb
index 332f4a77..66ef6990 100644
--- a/test/test_file_blob.rb
+++ b/test/test_file_blob.rb
@@ -411,6 +411,10 @@ class TestFileBlob < Minitest::Test
     assert sample_blob("public/javascripts/tiny_mce_popup.js").vendored?
     assert sample_blob("public/javascripts/tiny_mce_src.js").vendored?
 
+    # Ace Editor
+    assert sample_blob("ace-builds/src/ace.js").vendored?
+    assert sample_blob("static/project/ace-builds/src/ace.js").vendored?
+
     # AngularJS
     assert sample_blob("public/javascripts/angular.js").vendored?
     assert sample_blob("public/javascripts/angular.min.js").vendored?