diff --git a/lib/linguist/generated.rb b/lib/linguist/generated.rb
index 2074e008..a0f3a285 100644
--- a/lib/linguist/generated.rb
+++ b/lib/linguist/generated.rb
@@ -74,7 +74,7 @@ module Linguist
     #
     # Returns true of false.
     def xcode_file?
-      ['.nib', '.pbxproj'].include?(extname)
+      ['.nib', '.pbxproj', '.xcworkspacedata', '.xcuserstate'].include?(extname)
     end
 
     # Internal: Is the blob minified files?