diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e6f2911..fa05d0d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,7 +44,7 @@ jobs:
     
     - name: Upload artifacts
       if: matrix.ruby-version == '3.3'
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       with:
         name: site
         path: _site/