diff --git a/Gemfile.lock b/Gemfile.lock
index a1f4337..ca0859f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,7 +4,7 @@ GEM
     ansi (1.5.0)
     ast (2.4.2)
     builder (3.2.4)
-    minitest (5.17.0)
+    minitest (5.23.0)
     minitest-reporters (1.6.1)
       ansi
       builder
diff --git a/test/git_chain/command/branch_test.rb b/test/git_chain/command/branch_test.rb
index 6a41867..ca93791 100644
--- a/test/git_chain/command/branch_test.rb
+++ b/test/git_chain/command/branch_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Commands
-    class BranchTest < MiniTest::Test
+    class BranchTest < Minitest::Test
       include RepositoryTestHelper
 
       def test_append
diff --git a/test/git_chain/command/list_test.rb b/test/git_chain/command/list_test.rb
index 6525c72..91d8281 100644
--- a/test/git_chain/command/list_test.rb
+++ b/test/git_chain/command/list_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Commands
-    class ListTest < MiniTest::Test
+    class ListTest < Minitest::Test
       include RepositoryTestHelper
 
       def test_append
diff --git a/test/git_chain/command/prune_test.rb b/test/git_chain/command/prune_test.rb
index abf1539..3c7778f 100644
--- a/test/git_chain/command/prune_test.rb
+++ b/test/git_chain/command/prune_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Commands
-    class PruneTest < MiniTest::Test
+    class PruneTest < Minitest::Test
       include RepositoryTestHelper
 
       def test_clean_chain
diff --git a/test/git_chain/command/push_test.rb b/test/git_chain/command/push_test.rb
index bd41805..ac17835 100644
--- a/test/git_chain/command/push_test.rb
+++ b/test/git_chain/command/push_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Commands
-    class PushTest < MiniTest::Test
+    class PushTest < Minitest::Test
       include RepositoryTestHelper
 
       def test_push_nothing
diff --git a/test/git_chain/command/rebase_test.rb b/test/git_chain/command/rebase_test.rb
index 1c77b07..39cde72 100644
--- a/test/git_chain/command/rebase_test.rb
+++ b/test/git_chain/command/rebase_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Commands
-    class RebaseTest < MiniTest::Test
+    class RebaseTest < Minitest::Test
       include RepositoryTestHelper
 
       def test_rebasing_a_clean_chain
diff --git a/test/git_chain/command/setup_test.rb b/test/git_chain/command/setup_test.rb
index 326184b..df6d065 100644
--- a/test/git_chain/command/setup_test.rb
+++ b/test/git_chain/command/setup_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Commands
-    class SetupTest < MiniTest::Test
+    class SetupTest < Minitest::Test
       include RepositoryTestHelper
 
       def test_chain_noop
diff --git a/test/git_chain/command/teardown_test.rb b/test/git_chain/command/teardown_test.rb
index bf9c414..a5dbe56 100644
--- a/test/git_chain/command/teardown_test.rb
+++ b/test/git_chain/command/teardown_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Commands
-    class TeardownTest < MiniTest::Test
+    class TeardownTest < Minitest::Test
       include RepositoryTestHelper
 
       def test_tearing_down_a_clean_chain
diff --git a/test/git_chain/entry_point_test.rb b/test/git_chain/entry_point_test.rb
index 2bc4ce9..c0349af 100644
--- a/test/git_chain/entry_point_test.rb
+++ b/test/git_chain/entry_point_test.rb
@@ -2,7 +2,7 @@
 require "test_helper"
 
 module GitChain
-  class EntryPointTest < MiniTest::Test
+  class EntryPointTest < Minitest::Test
     def test_commands
       refute_nil(EntryPoint.commands["setup"])
     end
diff --git a/test/git_chain/fixtures_test.rb b/test/git_chain/fixtures_test.rb
index 36c6473..3e9f3fb 100644
--- a/test/git_chain/fixtures_test.rb
+++ b/test/git_chain/fixtures_test.rb
@@ -2,7 +2,7 @@
 require "test_helper"
 
 module GitChain
-  class FixturesTest < MiniTest::Test
+  class FixturesTest < Minitest::Test
     include RepositoryTestHelper
 
     def test_with_test_repository
diff --git a/test/git_chain/git_test.rb b/test/git_chain/git_test.rb
index 4dd125e..1e1a147 100644
--- a/test/git_chain/git_test.rb
+++ b/test/git_chain/git_test.rb
@@ -2,7 +2,7 @@
 require "test_helper"
 
 module GitChain
-  class GitTest < MiniTest::Test
+  class GitTest < Minitest::Test
     include RepositoryTestHelper
 
     def test_chains
diff --git a/test/git_chain/model/branch_test.rb b/test/git_chain/model/branch_test.rb
index 39e0ccb..ced1644 100644
--- a/test/git_chain/model/branch_test.rb
+++ b/test/git_chain/model/branch_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Models
-    class BranchTest < MiniTest::Test
+    class BranchTest < Minitest::Test
       include RepositoryTestHelper
 
       def test_from_config
diff --git a/test/git_chain/model/chain_test.rb b/test/git_chain/model/chain_test.rb
index 26cd655..f293ffc 100644
--- a/test/git_chain/model/chain_test.rb
+++ b/test/git_chain/model/chain_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Models
-    class ChainTest < MiniTest::Test
+    class ChainTest < Minitest::Test
       include RepositoryTestHelper
 
       def test_from_config
diff --git a/test/git_chain/rebase_test.rb b/test/git_chain/rebase_test.rb
index 314e5b6..e61f1a2 100644
--- a/test/git_chain/rebase_test.rb
+++ b/test/git_chain/rebase_test.rb
@@ -2,7 +2,7 @@
 require "test_helper"
 
 module GitChain
-  class RebaseTest < MiniTest::Test
+  class RebaseTest < Minitest::Test
     def test_rebase
       assert(true)
     end
diff --git a/test/git_chain/util/github_test.rb b/test/git_chain/util/github_test.rb
index 1b65d5f..8ab6c54 100644
--- a/test/git_chain/util/github_test.rb
+++ b/test/git_chain/util/github_test.rb
@@ -3,7 +3,7 @@
 
 module GitChain
   module Util
-    class GithubTest < MiniTest::Test
+    class GithubTest < Minitest::Test
       def test_parse_url
         %w(
           git@github.com:Shopify/git-chain.git
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 78d849f..3f38368 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -7,7 +7,7 @@
 require "minitest/autorun"
 require "minitest/reporters"
 
-MiniTest::Reporters.use!
+Minitest::Reporters.use!
 CLI::UI.enable_color = true
 
 require "tmpdir"