diff --git a/docs/conf.py b/docs/conf.py | |
index 10662e28c..a84e0b928 100644 | |
--- a/docs/conf.py | |
+++ b/docs/conf.py | |
@@ -41,7 +41,7 @@ highlight_language = 'cython' | |
extensions = [ | |
'ipython_console_highlighting', | |
'cython_highlighting', | |
- 'sphinx.ext.pngmath', | |
+ 'sphinx.ext.imgmath', | |
'sphinx.ext.todo', | |
'sphinx.ext.intersphinx', | |
'sphinx.ext.autodoc' |