diff --git a/capsnet-arch/requirements.txt b/capsnet-arch/requirements.txt
index 8da22e5..5c2fd4b 100644
--- a/capsnet-arch/requirements.txt
+++ b/capsnet-arch/requirements.txt
@@ -43,7 +43,7 @@ MarkupSafe==1.1.1
 matplotlib==3.1.0
 mistune==0.8.4
 mock==3.0.5
-nbconvert==5.5.0
+nbconvert==6.5.1
 nbformat==4.4.0
 notebook==5.7.8
 numpy==1.16.4