diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 290a2fa..8f9b715 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -42,7 +42,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
       - name: Cache mdBook binary
         id: cache-mdbook
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.cargo/bin/mdbook
           key: mdbook-${{ runner.os }}-${{ env.MDBOOK_VERSION }}