diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6c73f34..db7d9f2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,6 +34,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: rust_lib/target
+          key: rust_lib
 
       - name: Gradle Build
         run: ./gradlew build