diff --git a/.github/workflows/deploy-gh-pages.yml b/.github/workflows/deploy-gh-pages.yml
index 7ead0e8..c26ac3a 100644
--- a/.github/workflows/deploy-gh-pages.yml
+++ b/.github/workflows/deploy-gh-pages.yml
@@ -55,7 +55,7 @@ jobs:
       # Same cache as the docs check: social cards and the external assets the
       # privacy plugin downloads, so a deploy does not re-fetch them.
       - name: Restore social card and external asset cache
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: .cache
           key: mkdocs-material-${{ hashFiles('mkdocs.yml', 'docs/**') }}
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 34b0dd5..7482c5a 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -38,7 +38,7 @@ jobs:
       # .cache. Without it every build re-fetches them, and a strict build
       # turns a single failed download into a build failure.
       - name: Restore social card and external asset cache
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: .cache
           key: mkdocs-material-${{ hashFiles('mkdocs.yml', 'docs/**') }}