diff --git a/Otherfiles/doc-requirements.txt b/Otherfiles/doc-requirements.txt
index 49b94545..4f16d654 100644
--- a/Otherfiles/doc-requirements.txt
+++ b/Otherfiles/doc-requirements.txt
@@ -1,6 +1,6 @@
 art==6.2
 notebook==5.7.4
-nbformat==4.4.0
+nbformat==5.0.8
 traitlets==4.3.3
 nbconvert==5.6.1
 jupyter_contrib_nbextensions==0.5.1