diff --git a/.github/workflows/sphinx.yml b/.github/workflows/sphinx.yml
index 500f4b02..cb8cee4e 100644
--- a/.github/workflows/sphinx.yml
+++ b/.github/workflows/sphinx.yml
@@ -24,7 +24,7 @@ jobs:
         run: |
           cd docs
           make html SPHINXOPTS="-W"
-      - uses: actions/upload-artifact@v1
+      - uses: actions/upload-artifact@v4
         name: "upload artifacts"
         with:
           name: DocumentationHTML