diff --git a/.github/workflows/sphinx_doc.yml b/.github/workflows/sphinx_doc.yml
index 266e993..9d39a09 100644
--- a/.github/workflows/sphinx_doc.yml
+++ b/.github/workflows/sphinx_doc.yml
@@ -16,7 +16,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       #Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
           
       - name: Sphinx Build
         #You may pin to the exact commit or the version.
@@ -30,13 +30,13 @@ jobs:
           pre-build-command: 'python -m pip install sphinx_rtd_theme nbsphinx sphinxcontrib.bibtex sphinxcontrib.programoutput sphinxcontrib.contentui autodoc MarkupSafe==2.0.1'
           
       - name: Upload a Build Artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: 'html.zip'
           path: 'doc/_build/'
           
       - name: Checkout neasqc.github.io   
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           ref: main
           persist-credentials: true 
diff --git a/doc/index.rst b/doc/index.rst
index 8bbeb90..c970b20 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -83,3 +83,4 @@
 
    utils.rst
 
+