diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f98d1e6..71cfd9a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,6 +31,10 @@ jobs:
 
     - name: Run tests
       run: bundle exec rake test
+      env:
+        LIZARD_REPORT: ${{ matrix.ruby-version == '4.0' && 'true' || 'false' }}
+        LIZARD_API_KEY: ${{ secrets.LIZARD_API_KEY }}
+        LIZARD_URL: ${{ secrets.LIZARD_URL }}
 
     - name: Upload coverage reports
       uses: codecov/codecov-action@v5.5.2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d59f3a6..02ec5bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Lizard test reporting in CI and Minitest reporter plugin in test_helper
+
 ### Removed
 
 - Ruby 3.2 support; minimum is now 3.3
diff --git a/Gemfile.lock b/Gemfile.lock
index 38f0c03..17f1309 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,7 +17,7 @@ GEM
     docile (1.4.1)
     drb (2.2.3)
     hashdiff (1.2.1)
-    json (2.15.2)
+    json (2.19.2)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
     minitest (6.0.2)
@@ -26,7 +26,7 @@ GEM
     mocha (3.1.0)
       ruby2_keywords (>= 0.0.5)
     parallel (1.27.0)
-    parser (3.3.10.0)
+    parser (3.3.10.2)
       ast (~> 2.4.1)
       racc
     prism (1.9.0)
@@ -49,7 +49,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-support (3.13.7)
-    rubocop (1.80.2)
+    rubocop (1.84.2)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.1.0)
@@ -57,16 +57,16 @@ GEM
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 2.9.3, < 3.0)
-      rubocop-ast (>= 1.46.0, < 2.0)
+      rubocop-ast (>= 1.49.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 4.0)
-    rubocop-ast (1.47.1)
+    rubocop-ast (1.49.1)
       parser (>= 3.3.7.2)
-      prism (~> 1.4)
-    rubocop-performance (1.25.0)
+      prism (~> 1.7)
+    rubocop-performance (1.26.1)
       lint_roller (~> 1.1)
       rubocop (>= 1.75.0, < 2.0)
-      rubocop-ast (>= 1.38.0, < 2.0)
+      rubocop-ast (>= 1.47.1, < 2.0)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
     simplecov (0.22.0)
@@ -75,18 +75,18 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.13.2)
     simplecov_json_formatter (0.1.4)
-    standard (1.51.1)
+    standard (1.54.0)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.0)
-      rubocop (~> 1.80.2)
+      rubocop (~> 1.84.0)
       standard-custom (~> 1.0.0)
       standard-performance (~> 1.8)
     standard-custom (1.0.2)
       lint_roller (~> 1.0)
       rubocop (~> 1.50)
-    standard-performance (1.8.0)
+    standard-performance (1.9.0)
       lint_roller (~> 1.1)
-      rubocop-performance (~> 1.25.0)
+      rubocop-performance (~> 1.26.0)
     standardrb (1.0.1)
       standard
     unicode-display_width (3.2.0)
diff --git a/test/client_test.rb b/test/client_test.rb
index 51e6b6e..b9ee087 100644
--- a/test/client_test.rb
+++ b/test/client_test.rb
@@ -1,11 +1,16 @@
 require "test_helper"
 
 class ClientTest < Minitest::Test
+  LIZARD_ENV_KEYS = %w[LIZARD_API_KEY LIZARD_URL].freeze
+
+  def setup
+    @original_env = LIZARD_ENV_KEYS.to_h { |k| [k, ENV[k]] }
+  end
+
   def teardown
     Lizard.api_key = nil
     Lizard.url = nil
-    ENV.delete("LIZARD_API_KEY")
-    ENV.delete("LIZARD_URL")
+    LIZARD_ENV_KEYS.each { |k| ENV[k] = @original_env[k] }
   end
 
   def test_initialize_accepts_parameters
diff --git a/test/minitest_reporter_test.rb b/test/minitest_reporter_test.rb
index 526f928..726bf90 100644
--- a/test/minitest_reporter_test.rb
+++ b/test/minitest_reporter_test.rb
@@ -1,15 +1,15 @@
 require "test_helper"
 
 class MinitestReporterTest < Minitest::Test
+  LIZARD_ENV_KEYS = %w[LIZARD_TEST_MODE LIZARD_API_KEY LIZARD_URL LIZARD_REPORT].freeze
+
   def setup
+    @original_env = LIZARD_ENV_KEYS.to_h { |k| [k, ENV[k]] }
     @reporter = Lizard::MinitestReporter.new
   end
 
   def teardown
-    ENV.delete("LIZARD_TEST_MODE")
-    ENV.delete("LIZARD_API_KEY")
-    ENV.delete("LIZARD_URL")
-    ENV.delete("LIZARD_REPORT")
+    LIZARD_ENV_KEYS.each { |k| ENV[k] = @original_env[k] }
   end
 
   def test_inherits_from_minitest_statistics_reporter
diff --git a/test/rspec_formatter_test.rb b/test/rspec_formatter_test.rb
index 30a02fe..fffa3ba 100644
--- a/test/rspec_formatter_test.rb
+++ b/test/rspec_formatter_test.rb
@@ -1,16 +1,16 @@
 require "test_helper"
 
 class RSpecFormatterTest < Minitest::Test
+  LIZARD_ENV_KEYS = %w[LIZARD_TEST_MODE LIZARD_API_KEY LIZARD_URL LIZARD_REPORT].freeze
+
   def setup
+    @original_env = LIZARD_ENV_KEYS.to_h { |k| [k, ENV[k]] }
     @output = StringIO.new
     @formatter = Lizard::RSpecFormatter.new(@output)
   end
 
   def teardown
-    ENV.delete("LIZARD_TEST_MODE")
-    ENV.delete("LIZARD_API_KEY")
-    ENV.delete("LIZARD_URL")
-    ENV.delete("LIZARD_REPORT")
+    LIZARD_ENV_KEYS.each { |k| ENV[k] = @original_env[k] }
   end
 
   def test_inherits_from_rspec_base_formatter
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 2a25257..988b65c 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -14,3 +14,11 @@
 require "lizard"
 require "minitest/autorun"
 require "mocha/minitest"
+
+Minitest.extensions << "lizard"
+
+module Minitest
+  def self.plugin_lizard_init(options)
+    reporter << Lizard::MinitestReporter.new(options[:io], options)
+  end
+end