diff --git a/.github/workflows/pr-check.yml b/.github/workflows/pr-check.yml
index a411d3c9f..aa259518e 100644
--- a/.github/workflows/pr-check.yml
+++ b/.github/workflows/pr-check.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   quick-ci-check:
-    runs-on: ubuntu-latest
+    runs-on: cos-m
     timeout-minutes: 30
     steps:
       - name: Checkout