From cfe0156f5cccb7a7f2ee55874bf5af29534c98dc Mon Sep 17 00:00:00 2001
From: Jake VanderPlas <jakevdp@google.com>
Date: Wed, 27 Oct 2021 20:44:25 -0700
Subject: [PATCH] readthedocs: use new build configuration & update to Python
 3.9

---
 .readthedocs.yml      | 6 +++++-
 docs/requirements.txt | 1 -
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/.readthedocs.yml b/.readthedocs.yml
index 92e8df0b170c..e878805a1377 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -5,6 +5,11 @@
 # Required
 version: 2
 
+build:
+  os: "ubuntu-20.04"
+  tools:
+    python: "3.9"
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/conf.py
@@ -16,6 +21,5 @@ formats:
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-  version: 3.8
   install:
     - requirements: docs/requirements.txt
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 8f7361fb35c4..6ebda8815661 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -5,7 +5,6 @@ sphinx_rtd_theme
 sphinx-autodoc-typehints==1.11.1
 jupyter-sphinx>=0.3.2
 myst-nb
-jupyter-core!=4.9.0  # https://github.com/jupyter/jupyter_core/issues/246
 
 # Packages used for CI tests.
 pytest