From 9e0776037e049166a4ce8a7960dd6268f0140c7e Mon Sep 17 00:00:00 2001
From: Cagtay Fabry <43667554+CagtayFabry@users.noreply.github.com>
Date: Tue, 13 Jul 2021 13:23:04 +0200
Subject: [PATCH] pin sphinx to 4.0

---
 doc/rtd_environment.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/rtd_environment.yml b/doc/rtd_environment.yml
index d1bbf4a1a..457289681 100644
--- a/doc/rtd_environment.yml
+++ b/doc/rtd_environment.yml
@@ -7,7 +7,7 @@ dependencies:
   - ipykernel
   - ipywidgets
   # documentation
-  - sphinx
+  - sphinx=4.0
   - jinja2=2
   - m2r2
   - sphinxcontrib-napoleon