diff --git a/docs/requirements.txt b/docs/requirements.txt
index e7af926..7449547 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
 ipykernel==6.25.2
-nbsphinx==0.9.3
+nbsphinx==0.9.4
 pydata-sphinx-theme==0.14.4
 sphinx==7.1.2
 sphinx-gallery==0.15.0