diff --git a/requirements.txt b/requirements.txt
index 5ee080a..3ca217e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ markupsafe==1.1.1
 mistune==0.8.4
 nbconvert==5.6.1
 nbformat==5.0.4
-notebook==6.0.3
+notebook==6.4.12
 pandocfilters==1.4.2
 parso==0.6.2
 pexpect==4.8.0 ; sys_platform != 'win32'