diff --git a/requirements.txt b/requirements.txt
index a8d2916..7e50695 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ nb-conda-kernels==2.1.0
 nbconvert==5.3.1
 nbformat==4.4.0
 nbpresent==3.0.2
-notebook==6.1.5
+notebook==6.4.1
 numpy==1.15.0
 pandas==0.23.4
 pandocfilters==1.4.2