diff --git a/api-book/requirements.txt b/api-book/requirements.txt
index 413724e..bda2888 100644
--- a/api-book/requirements.txt
+++ b/api-book/requirements.txt
@@ -51,7 +51,7 @@ nbformat==5.1.2
 nest-asyncio==1.5.1
 nested-lookup==0.2.21
 nodeenv==1.5.0
-notebook==6.2.0
+notebook==6.4.12
 numpy==1.19.5
 packaging==20.9
 pandas==1.1.5