diff --git a/.github/workflows/build-pages.yml b/.github/workflows/build-pages.yml
index cbdacae3..81f97231 100644
--- a/.github/workflows/build-pages.yml
+++ b/.github/workflows/build-pages.yml
@@ -44,7 +44,7 @@ jobs:
           ${PIP} uninstall -y progressbar2
       - name: Cache notebook execution results
         if: ${{ !(github.event_name == 'workflow_dispatch' && inputs.fresh_run) }}
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: _build/.jupyter_cache
           key: jupyter-cache-${{ github.ref_name }}-${{ hashFiles('_config.yml', '_toc.yml', 'requirements.txt', 'book/**/*.md', 'notebooks/**/*.ipynb') }}