diff --git a/entity_linkage/typing/knet/requirements.txt b/entity_linkage/typing/knet/requirements.txt
index 36e75e01..cfba4463 100644
--- a/entity_linkage/typing/knet/requirements.txt
+++ b/entity_linkage/typing/knet/requirements.txt
@@ -19,7 +19,7 @@ jupyter-console==6.0.0
 jupyter-core==4.4.0
 MarkupSafe==1.1.1
 mistune==0.8.4
-nbconvert==5.4.1
+nbconvert==6.5.1
 nbformat==4.4.0
 notebook==5.7.8
 numpy==1.16.2