diff --git a/test/basic_report/test_helper.rb b/test/basic_report/test_helper.rb
index f34dad64..761df9d4 100644
--- a/test/basic_report/test_helper.rb
+++ b/test/basic_report/test_helper.rb
@@ -2,7 +2,6 @@
 
 require 'minitest/autorun'
 require 'minitest/spec'
-require 'minitest/unit'
 require 'mocha/minitest'
 require 'pdf/inspector'
 
diff --git a/test/main/test_helper.rb b/test/main/test_helper.rb
index 1cfbaa81..2b39266a 100644
--- a/test/main/test_helper.rb
+++ b/test/main/test_helper.rb
@@ -2,6 +2,5 @@
 
 require 'minitest/autorun'
 require 'minitest/spec'
-require 'minitest/unit'
 
 require 'thinreports'
diff --git a/test/section_report/test_helper.rb b/test/section_report/test_helper.rb
index 9a548b15..32524d10 100644
--- a/test/section_report/test_helper.rb
+++ b/test/section_report/test_helper.rb
@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
 require 'minitest/autorun'
-require 'minitest/unit'
 require 'mocha/minitest'
 
 require 'thinreports'