diff --git a/content/conf.py b/content/conf.py
index e237a95..180ca26 100644
--- a/content/conf.py
+++ b/content/conf.py
@@ -23,6 +23,8 @@
     # githubpages just adds a .nojekyll file
     'sphinx.ext.githubpages',
     'sphinx_lesson',
+    'sphinx.ext.mathjax',
+    'sphinx-mathjax-offline',
     'sphinx.ext.imgmath',
     'sphinx_rtd_theme_ext_color_contrast',
     'sphinx_copybutton',
diff --git a/requirements.txt b/requirements.txt
index f7f8686..0a9cbbe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 sphinx_rtd_theme
 sphinx-copybutton
 sphinx-lesson
+sphinx-mathjax-offline
 sphinx_rtd_theme_ext_color_contrast
 sphinx-simplepdf