diff --git a/docs/requirements.txt b/docs/requirements.txt
deleted file mode 100644
index 51e903c..0000000
--- a/docs/requirements.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-ipykernel
-git+https://github.com/spatialaudio/nbsphinx.git@master
diff --git a/readthedocs.yml b/readthedocs.yml
index ef93556..eb59ce2 100644
--- a/readthedocs.yml
+++ b/readthedocs.yml
@@ -12,7 +12,6 @@ sphinx:
 python:
   version: 3
   install:
-    - requirements: docs/requirements.txt
     - method: pip
       path: .
       extra_requirements:
diff --git a/setup.cfg b/setup.cfg
index fcdaf58..1df797b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -57,6 +57,7 @@ complete =
 docs =
     sphinx == 4.0.2
     nbsphinx >= 0.8.6
+    ipython
     sphinx-autosummary-accessors
     sphinx_rtd_theme