diff --git a/docs/requirements.txt b/docs/requirements.txt
index 30cf1da..e481dc1 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -5,7 +5,7 @@ ipywidgets>=8.0.0
 #Jinja2>=2.11.3,<3.1.0
 #nbconvert>=6.4.5
 # very slow build
-nbsphinx>=0.8.1,<0.8.7
+nbsphinx>=0.8.1,<0.9.3
 pyenchant>=3.1.1
 requests
 sphinx>=3.5.4,<=4.0.0