diff --git a/.github/workflows/backend-ci.yml b/.github/workflows/backend-ci.yml
index c00d4cd..a4229a1 100644
--- a/.github/workflows/backend-ci.yml
+++ b/.github/workflows/backend-ci.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   unit-test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-slim
     defaults:
       run:
         working-directory: backend