diff --git a/.github/workflows/conformance.yml b/.github/workflows/conformance.yml
index 8f35f66..ce14e4d 100644
--- a/.github/workflows/conformance.yml
+++ b/.github/workflows/conformance.yml
@@ -31,7 +31,7 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
 
       - name: Cache Cargo registry
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/registry