diff --git a/Library/Homebrew/cask/.simplecov b/Library/Homebrew/cask/.simplecov
index f152ccc91b..e1a2a4001a 100644
--- a/Library/Homebrew/cask/.simplecov
+++ b/Library/Homebrew/cask/.simplecov
@@ -1,7 +1,5 @@
 SimpleCov.start do
-  add_filter 'bin/'
-  add_filter 'Casks/'
-  add_filter 'developer/'
+  add_filter 'lib/vendor/'
   add_filter 'doc/'
   add_filter 'spec/'
   add_filter 'test/'