diff --git a/.github/workflows/backend-test.yml b/.github/workflows/backend-test.yml
index 0167f182a0..fafc91ea46 100644
--- a/.github/workflows/backend-test.yml
+++ b/.github/workflows/backend-test.yml
@@ -38,6 +38,8 @@ jobs:
         with:
           toolchain: 1.80.0
       - uses: ubicloud/rust-cache@v2
+        with:
+          workspaces: backend -> backend/target
       - name: cargo test
         timeout-minutes: 15
         run: