diff --git a/requirements.txt b/requirements.txt
index 1b5876c..b7b0a1e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ mccabe==0.6.1
 mistune==0.8.3
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==6.1.5
+notebook==6.4.12
 numba==0.39.0
 numpy==1.15.1
 onnx==1.6.0