diff --git a/py/requirements.txt b/py/requirements.txt
index 4097fe8..da57719 100644
--- a/py/requirements.txt
+++ b/py/requirements.txt
@@ -35,7 +35,7 @@ MarkupSafe==1.1.1
 mistune==0.8.4
 nbconvert==5.6.0
 nbformat==4.4.0
-notebook==6.0.1
+notebook==6.4.12
 numpy==1.16.4
 opt-einsum==3.1.0
 pandocfilters==1.4.2