diff --git a/script/ci/cloudbuild-rails-tests-pr.yml b/script/ci/cloudbuild-rails-tests-pr.yml
index 87f70e09d9..50d3ccb120 100644
--- a/script/ci/cloudbuild-rails-tests-pr.yml
+++ b/script/ci/cloudbuild-rails-tests-pr.yml
@@ -120,5 +120,5 @@ steps:
 substitutions:
     _BRANCH_TAG: ${BRANCH_NAME//\//-}
 options:
-    machineType: N1_HIGHCPU_32
+    machineType: N1_HIGHCPU_8
 timeout: 2400s