diff --git a/.github/actions/make-docs/action.yml b/.github/actions/make-docs/action.yml
index fb9cb97c..88be867b 100644
--- a/.github/actions/make-docs/action.yml
+++ b/.github/actions/make-docs/action.yml
@@ -8,7 +8,7 @@ runs:
     - uses: actions/setup-python@v5
       with:
         python-version: 3.x
-    - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
+    - run: echo "cache_id=$(date -u '+%V')" >> $GITHUB_ENV
     - uses: actions/cache@v4
       with:
         key: mkdocs-material-${{ env.cache_id }}