diff --git a/test/helper.rb b/test/helper.rb
index 222ebe5..ead7a86 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -4,7 +4,7 @@
 require "kiba"
 
 if ENV["CI"] == "true"
-  puts "Running with MiniTest version #{MiniTest::VERSION}"
+  puts "Running with Minitest version #{Minitest::VERSION}"
 end
 
 class Kiba::Test < Minitest::Test
diff --git a/test/shared_runner_tests.rb b/test/shared_runner_tests.rb
index d9f93a2..65770c8 100644
--- a/test/shared_runner_tests.rb
+++ b/test/shared_runner_tests.rb
@@ -64,7 +64,7 @@ def test_pre_process_runs_once
   def test_pre_process_runs_before_source_is_instantiated
     calls = []
 
-    mock_source_class = MiniTest::Mock.new
+    mock_source_class = Minitest::Mock.new
     mock_source_class.expect(:new, TestEnumerableSource.new([1, 2, 3])) do
       calls << :source_instantiated
     end
@@ -80,9 +80,9 @@ def test_pre_process_runs_before_source_is_instantiated
 
   def test_no_error_raised_if_destination_close_not_implemented
     # NOTE: this fake destination does not implement `close`
-    destination_instance = MiniTest::Mock.new
+    destination_instance = Minitest::Mock.new
 
-    mock_destination_class = MiniTest::Mock.new
+    mock_destination_class = Minitest::Mock.new
     mock_destination_class.expect(:new, destination_instance)
 
     control = Kiba::Control.new
@@ -92,9 +92,9 @@ def test_no_error_raised_if_destination_close_not_implemented
   end
 
   def test_destination_close_called_if_defined
-    destination_instance = MiniTest::Mock.new
+    destination_instance = Minitest::Mock.new
     destination_instance.expect(:close, nil)
-    mock_destination_class = MiniTest::Mock.new
+    mock_destination_class = Minitest::Mock.new
     mock_destination_class.expect(:new, destination_instance)
 
     control = Kiba::Control.new