diff --git a/docs/mkdocs-base.yml b/docs/mkdocs-base.yml
index 414124bfc..cc4697b69 100644
--- a/docs/mkdocs-base.yml
+++ b/docs/mkdocs-base.yml
@@ -34,8 +34,8 @@ markdown_extensions:
                             class: mermaid
                             format: !!python/name:pymdownx.superfences.fence_code_format
         - pymdownx.emoji:
-                  emoji_generator: !!python/name:materialx.emoji.to_svg
-                  emoji_index: !!python/name:materialx.emoji.twemoji
+                emoji_index: !!python/name:material.extensions.emoji.twemoji
+                emoji_generator: !!python/name:material.extensions.emoji.to_svg
 
 nav:
         - Home:
diff --git a/requirements.txt b/requirements.txt
index 542c2fde5..09bd5c0d9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,11 +1,21 @@
-
+#Alternative for pdf creation - broken on nixos and lately ubuntu
 mkdocs-with-pdf
-mkdocs-material
+# Export to pdf - see https://comwes.github.io/mkpdfs-mkdocs-plugin/index.html
+#mkpdfs-mkdocs
+# Rather do
+# pip install -e git+https://github.com/jwaschkau/mkpdfs-mkdocs-plugin.git#egg=mkpdfs-mkdocs
+mkdocs-material >= 9.5.32
 mdx_gh_links
 mkdocs-pdf-export-plugin
 mkdocstrings-python
 mkdocs-video
+mkdocs-redirects
+mkdocs-enumerate-headings-plugin
+mkdocs-git-revision-date-localized-plugin
 # needed for the create-uuid.py helper script
 shortuuid
 # Needed for mkdocstrings python documentation generator
 black
+cffi
+# Needed for PDF back page QR Code
+qrcode