diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index e15e2c8..5d904ae 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -21,7 +21,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
         allow-prereleases: true
     - name: Set up Poetry cache for Python dependencies
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       if: startsWith(runner.os, 'Linux')
       with:
         path: ~/.cache/pypoetry