diff --git a/.github/workflows/build-python-apps.yml b/.github/workflows/build-python-apps.yml
index f72f0e51..ca324f88 100644
--- a/.github/workflows/build-python-apps.yml
+++ b/.github/workflows/build-python-apps.yml
@@ -12,7 +12,7 @@ jobs:
         with:
           cache-lmdb-store: true
           gha-cache-key: unittest-cache0
-          named-caches-hash: ${{ hashFiles(yaku-apps-python/3rdparty/*.txt') }}
+          named-caches-hash: ${{ hashFiles('yaku-apps-python/3rdparty/*.txt') }}
 
       - name: Lint and check
         working-directory: yaku-apps-python