diff --git a/.github/workflows/audit.yml b/.github/workflows/audit.yml
index 0c462ee..8894e29 100644
--- a/.github/workflows/audit.yml
+++ b/.github/workflows/audit.yml
@@ -36,7 +36,7 @@ jobs:
     # Building cargo-audit from source costs minutes; cache the binary.
     # Bump the key suffix to force a reinstall on a newer release.
     - name: Cache cargo-audit
-      uses: actions/cache@v4
+      uses: actions/cache@v6
       with:
         path: ~/.cargo/bin/cargo-audit
         key: cargo-audit-${{ runner.os }}-v1