diff --git a/docs/source/conf.py b/docs/source/conf.py
index af3cb2f..d1742fd 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -46,7 +46,6 @@ extensions = [
     "sphinx.ext.intersphinx",
     "sphinx_copybutton",
     "recommonmark",
-    "nbsphinx",
     "sphinxcontrib.katex",
 ]