diff --git a/requirements.txt b/requirements.txt
index 2b775d8..815f4a0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ markupsafe==1.1.1; python_version >= '2.7' and python_version not in '3.0, 3.1,
 mistune==0.8.4

 nbconvert==5.6.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'

 nbformat==5.0.7; python_version >= '3.5'

-notebook==6.1.5; python_version >= '3.5'

+notebook==6.4.12; python_version >= '3.5'

 numba==0.51.0

 numpy==1.19.1

 packaging==20.4; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'