diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index 07d79ff..8a8bdfd 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -24,6 +24,6 @@ jobs:
       - name: insall by bundler
         run: bundle install
       - name: run unittests
-        run: bundle exec ruby test/*.rb
+        run: bundle exec ruby --jit test/*.rb
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3