diff --git a/requirements-dev.txt b/requirements-dev.txt
index d345a41..8e80d5a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -50,7 +50,7 @@ more-itertools==4.3.0
 names==0.3.0
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.0
+notebook==6.1.5
 numba==0.40.1
 numpy==1.15.4
 packaging==18.0