diff --git a/pyConv/requirements.txt b/pyConv/requirements.txt
index a5cf5ca..35a0789 100644
--- a/pyConv/requirements.txt
+++ b/pyConv/requirements.txt
@@ -50,7 +50,7 @@ nbclient==0.5.4
 nbconvert==6.1.0
 nbformat==5.1.3
 nest-asyncio==1.5.1
-notebook==6.4.3
+notebook==6.4.12
 numpy==1.21.1
 odfpy==1.4.1
 openpyxl==3.0.7