diff --git a/docs/source/conf.py b/docs/source/conf.py
index c9c7e9d0..1cf8a4ca 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -54,9 +54,7 @@
     'nbsphinx',
     'sphinx.ext.mathjax',
     'sphinx.ext.viewcode',
-    'sphinx.ext.githubpages',
-    'IPython.sphinxext.ipython_console_highlighting',
-    'm2r'
+    'sphinx.ext.githubpages'
 ]
 
 # Both the class’ and the __init__ method’s docstring are concatenated and inserted.