diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7ab693aa..f4c105a6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -218,7 +218,7 @@ jobs:
           ruby-version: "3.4"
           bundler-cache: true
       - run: ./bin/test-gem-build gems ruby
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: source-gem
           path: gems
@@ -281,7 +281,7 @@ jobs:
           docker run --rm -v $PWD:/work -w /work \
             ghcr.io/rake-compiler/rake-compiler-dock-image:${{ needs.native_setup.outputs.rcd_image_version }}-mri-${{ matrix.platform }} \
             ./bin/test-gem-build gems ${{ matrix.platform }}
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: "cruby-${{ matrix.platform }}-gem"
           path: gems