diff --git a/lib/rubocop/changes/checker.rb b/lib/rubocop/changes/checker.rb
index cd4a6f3..8a1e389 100644
--- a/lib/rubocop/changes/checker.rb
+++ b/lib/rubocop/changes/checker.rb
@@ -3,6 +3,7 @@
 require 'git_diff_parser'
 require 'rubocop'
 require 'json'
+require 'ostruct'
 
 require 'rubocop/changes/check'
 require 'rubocop/changes/shell'