diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8cf8e81..f33a7ce 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -71,6 +71,8 @@ jobs:
             echo 'RUST_LOG=' >> $GITHUB_ENV
             echo 'RUBY_TEST_TIMEOUT_SCALE=20' >> $GITHUB_ENV
             echo 'SYNTAX_SUGGEST_TIMEOUT=120' >> $GITHUB_ENV
+          else
+            echo 'RUBY_TEST_TIMEOUT_SCALE=3' >> $GITHUB_ENV
           fi
           echo "EXCLUDES=$PWD/test/.excludes-mmtk" >> $GITHUB_ENV
           echo "MSPECOPT=-B$PWD/spec/mmtk.mspec" >> $GITHUB_ENV