diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index db028b5..de2f0ef 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -9,6 +9,6 @@ jobs:
           submodules: true
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.1
+          ruby-version: 3.2
       - run: gem install jls-grok minitest
       - run: ruby test/test.rb
diff --git a/test/test.rb b/test/test.rb
index c807aca..0cf9bd9 100644
--- a/test/test.rb
+++ b/test/test.rb
@@ -12,7 +12,7 @@
 # It creates test cases from all yaml files in the current
 # directory.
 
-class TestGrokPatterns < MiniTest::Test
+class TestGrokPatterns < Minitest::Test
 
     @@test_dir = File.dirname(__FILE__)
     @@upstream_pattern_dir = @@test_dir + '/logstash-patterns-core/patterns/ecs-v1/'