diff --git a/test/central_ict_test.rb b/test/central_ict_test.rb
index 9a4b41e..687368f 100644
--- a/test/central_ict_test.rb
+++ b/test/central_ict_test.rb
@@ -8,7 +8,7 @@
 end
 
 module SmsKit
-  class CentralICTTest < MiniTest::Test
+  class CentralICTTest < Minitest::Test
 
     def text_message
       { text: 'foo bar', to: 12345 }
diff --git a/test/config_test.rb b/test/config_test.rb
index 075889c..ee42bb9 100644
--- a/test/config_test.rb
+++ b/test/config_test.rb
@@ -4,7 +4,7 @@ class TestProvider
   include SmsKit::Config
 end
 
-class ConfigTest < MiniTest::Test
+class ConfigTest < Minitest::Test
 
   def test_config
     TestProvider.config.username = 'foo'
diff --git a/test/delivery_test.rb b/test/delivery_test.rb
index c909f2c..a003898 100644
--- a/test/delivery_test.rb
+++ b/test/delivery_test.rb
@@ -1,6 +1,6 @@
 require 'helper'
 
-class DeliveryTest < MiniTest::Test
+class DeliveryTest < Minitest::Test
 
   def test_delivery
     VCR.use_cassette 'mobi_web/quick_deliver' do
diff --git a/test/http_test.rb b/test/http_test.rb
index a1f4fd8..de27c4f 100644
--- a/test/http_test.rb
+++ b/test/http_test.rb
@@ -8,7 +8,7 @@ def connection
   end
 end
 
-class HttpTest < MiniTest::Test
+class HttpTest < Minitest::Test
 
   def setup
     @default = ExampleProvider.new
diff --git a/test/logging_test.rb b/test/logging_test.rb
index 6af7d43..481fe3a 100644
--- a/test/logging_test.rb
+++ b/test/logging_test.rb
@@ -3,7 +3,7 @@
 
 class MockLogger < Logger; end
 
-class LoggingTest < MiniTest::Test
+class LoggingTest < Minitest::Test
 
   def teardown
     SmsKit.logger = Logger.new '/dev/null'
diff --git a/test/mobi_web_test.rb b/test/mobi_web_test.rb
index af8d06f..12442d1 100644
--- a/test/mobi_web_test.rb
+++ b/test/mobi_web_test.rb
@@ -8,7 +8,7 @@
 end
 
 module SmsKit
-  class MobiWebTest < MiniTest::Test
+  class MobiWebTest < Minitest::Test
 
     def vcr_options
       { match_requests_on: [
diff --git a/test/mobimex_test.rb b/test/mobimex_test.rb
index 4889fc7..41cde70 100644
--- a/test/mobimex_test.rb
+++ b/test/mobimex_test.rb
@@ -9,7 +9,7 @@
 end
 
 module SmsKit
-  class MobimexTest < MiniTest::Test
+  class MobimexTest < Minitest::Test
 
     def text_message
       { text: 'foo bar', to: 12345, from: 6789 }
diff --git a/test/provider_test.rb b/test/provider_test.rb
index 617d310..fad8124 100644
--- a/test/provider_test.rb
+++ b/test/provider_test.rb
@@ -12,7 +12,7 @@ def deliver options = {}
 
 SmsKit.register stub_provider: StubProvider
 
-class ProviderTest < MiniTest::Test
+class ProviderTest < Minitest::Test
 
   def test_takes_options
     assert_equal :bar, ExampleProvider.new(foo: :bar).data[:foo]
diff --git a/test/sms_trade_test.rb b/test/sms_trade_test.rb
index 65b2bf2..e82f537 100644
--- a/test/sms_trade_test.rb
+++ b/test/sms_trade_test.rb
@@ -8,7 +8,7 @@
 end
 
 module SmsKit
-  class SmsTradeTest < MiniTest::Test
+  class SmsTradeTest < Minitest::Test
 
     def vcr_options
       { match_requests_on: [ VCR.request_matchers.uri_without_params(:key) ] }
diff --git a/test/utils_test.rb b/test/utils_test.rb
index f7cb3f7..fc2a565 100644
--- a/test/utils_test.rb
+++ b/test/utils_test.rb
@@ -2,7 +2,7 @@
 
 class Foo; end
 
-class UtilsTest < MiniTest::Test
+class UtilsTest < Minitest::Test
 
   def test_register
     SmsKit.register foo: Foo