diff --git a/mkdocs-readthedocs.yml b/mkdocs-readthedocs.yml
index f5b3984f..ecec5b21 100644
--- a/mkdocs-readthedocs.yml
+++ b/mkdocs-readthedocs.yml
@@ -22,26 +22,6 @@ markdown_extensions:
   - meta
   - admonition
   - attr_list
-  - pymdownx.arithmatex
-  - pymdownx.betterem:
-      smart_enable: all
-  - pymdownx.caret
-  - pymdownx.critic
-  - pymdownx.details
-  - pymdownx.emoji:
-      emoji_index: !!python/name:pymdownx.emoji.twemoji
-      emoji_generator: !!python/name:pymdownx.emoji.to_svg
-  - pymdownx.inlinehilite
-  - pymdownx.magiclink
-  - pymdownx.mark
-  - pymdownx.smartsymbols
-  - pymdownx.superfences
-  - pymdownx.tasklist:
-      custom_checkbox: true
-  - pymdownx.tabbed
-  - pymdownx.tilde
-  - codehilite
-  - footnotes  
   #- sphinx_search.extension
   - toc:
       permalink: true
diff --git a/requirements-readthedocs.txt b/requirements-readthedocs.txt
index 717b834f..ba28dabd 100644
--- a/requirements-readthedocs.txt
+++ b/requirements-readthedocs.txt
@@ -1,4 +1,3 @@
 mkdocs==1.1.2
 sphinx-rtd-theme
-pymdown-extensions
 #readthedocs-sphinx-search