diff --git a/powcoin/requirements.txt b/powcoin/requirements.txt
index 41cb789..c074eb9 100644
--- a/powcoin/requirements.txt
+++ b/powcoin/requirements.txt
@@ -25,7 +25,7 @@ jupyter-core==4.4.0
 MarkupSafe==1.0
 mistune==0.8.3
 more-itertools==4.3.0
-nbconvert==5.4.0
+nbconvert==6.5.1
 nbformat==4.4.0
 notebook==5.7.0
 pandocfilters==1.4.2