diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index fd1ff32..0e97ae9 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -36,9 +36,9 @@ jobs:
         # A list of files, directories, and wildcard patterns to cache and restore
         path: .venv
         # An explicit key for restoring and saving the cache
-        key: venv-cache-${{hashfiles("poetry.lock")
+        key: venv-cache-${{hashfiles("poetry.lock")}}
         restore-keys: |
-          venv-cache-${{hashfiles("poetry.lock")
+          venv-cache-${{hashfiles("poetry.lock")}}
           venv-cache-
     - name: Lint with flake8
       run: |