diff --git a/python-assignments/requirements.txt b/python-assignments/requirements.txt
index 2890a28..6fb6d61 100644
--- a/python-assignments/requirements.txt
+++ b/python-assignments/requirements.txt
@@ -33,7 +33,7 @@ mkl-fft==1.0.4
 mkl-random==1.0.1
 nbconvert==5.3.1
 nbformat==4.4.0
-notebook==5.7.8
+notebook==6.4.12
 numpy==1.13.3
 pandocfilters==1.4.2
 parso==0.3.1