diff --git a/docs/requirements.txt b/docs/requirements.txt
index 888c3b654..48e9313e0 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==2.2.0
-nbsphinx==0.8.9
+nbsphinx==0.9.4
 sphinx-copybutton==0.5.*
 
 # update when this is resolved: https://github.com/spatialaudio/nbsphinx/issues/655