diff --git a/docs/requirements.txt b/docs/requirements.txt
index ff5e76bf1..8a6c53b03 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,7 +2,7 @@ sphinx==5.3.0
 furo==2022.9.29
 myst-parser==0.18.1
 autodoc-pydantic==1.8.0
-nbsphinx==0.8.9
+nbsphinx==0.9.4
 sphinx-copybutton==0.5.*
 
 # update when this is resolved: https://github.com/spatialaudio/nbsphinx/issues/655