diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index fae577a..6000400 100644
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -66,7 +66,7 @@ jobs:
       # seeds and re-derives the same shallow coverage forever - which looks like
       # fuzzing and is not.
       - name: Restore corpus
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v6
         with:
           path: crates/ffai-mercury/fuzz/corpus/${{ matrix.target }}
           key: fuzz-corpus-${{ matrix.target }}-${{ github.run_id }}
@@ -81,7 +81,7 @@ jobs:
 
       - name: Save corpus
         if: always()
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v6
         with:
           path: crates/ffai-mercury/fuzz/corpus/${{ matrix.target }}
           key: fuzz-corpus-${{ matrix.target }}-${{ github.run_id }}