diff --git a/.github/workflows/checkformat.yml b/.github/workflows/checkformat.yml
index 3760fba7..755d6a22 100644
--- a/.github/workflows/checkformat.yml
+++ b/.github/workflows/checkformat.yml
@@ -9,7 +9,7 @@ env:
 
 jobs:
   checkformat:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     steps:
       - name: Checkout repo
         uses: actions/checkout@v6