diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 4bfad8bc531..1f5ff5a1a4d 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -14,7 +14,7 @@ permissions:
 jobs:
   check:
     name: Check
-    runs-on: temporary-sizing-testing_ubuntu-latest_8-core
+    runs-on: temporary-sizing-testing_ubuntu-latest_4-core
     steps:
       - name: setup
         run: >