diff --git a/docs/mkdocs-base.yml b/docs/mkdocs-base.yml
index f92e561..b814e67 100644
--- a/docs/mkdocs-base.yml
+++ b/docs/mkdocs-base.yml
@@ -29,13 +29,14 @@ markdown_extensions:
         - pymdownx.mark
         - pymdownx.tilde
         - pymdownx.superfences:
-                  custom_fences:
-                          - name: mermaid
-                            class: mermaid
-                            format: !!python/name:pymdownx.superfences.fence_code_format
-        # - pymdownx.emoji:
-        #         emoji_index: !!python/name:materialx.emoji.twemoji
-        #         emoji_generator: !!python/name:materialx.emoji.to_svg 
+                custom_fences:
+                        - name: mermaid
+                        class: mermaid
+                        format: !!python/name:pymdownx.superfences.fence_code_format
+        - pymdownx.emoji:
+                emoji_index: !!python/name:material.extensions.emoji.twemoji
+                emoji_generator: !!python/name:material.extensions.emoji.to_svg
+
 
 # Navigation
 nav:
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 51a4418..c494ad1 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,3 @@
-
 mkdocs-with-pdf
 mkdocs-material>=9.5.32
 mdx_gh_links
@@ -10,5 +9,6 @@ mkdocs-enumerate-headings-plugin
 mkdocs-git-revision-date-localized-plugin
 # needed for the create-uuid.py helper script
 shortuuid
+cffi
 # Needed for mkdocstrings python documentation generator
 black