diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0fcb84ed..ebab4584 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -53,7 +53,7 @@ jobs:
       # protocol's CMakeLists.txt currently compiles common/*.cc and its
       # own .cc files separately for every target).
       - name: Restore ccache
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ env.CCACHE_DIR }}
           key: ccache-${{ runner.os }}-${{ github.sha }}