diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index debc619..08267e8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -64,7 +64,7 @@ jobs:
       # see: https://squidfunk.github.io/mkdocs-material/publishing-your-site/#with-github-actions
       # weekly cache updates
       - run: echo "cache_id=$(date --utc '+%V')" >> "$GITHUB_ENV"
-      - uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+      - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           # weekly cache
           key: mkdocs-material-${{ env.cache_id }}
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 24df3a2..1855801 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -41,7 +41,7 @@ jobs:
       # see: https://squidfunk.github.io/mkdocs-material/publishing-your-site/#with-github-actions
       # weekly cache updates
       - run: echo "cache_id=$(date --utc '+%V')" >> "$GITHUB_ENV"
-      - uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+      - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           key: mkdocs-material-${{ env.cache_id }}
           path: .cache