diff --git a/regression/externalTools/MARS/requirements.txt b/regression/externalTools/MARS/requirements.txt
index 3f6c83c..9d31992 100644
--- a/regression/externalTools/MARS/requirements.txt
+++ b/regression/externalTools/MARS/requirements.txt
@@ -84,7 +84,7 @@ mpmath==0.19
 msgpack-python==0.4.8
 multipledispatch==0.4.8
 murmurhash==0.26.4
-nbconvert==4.1.0
+nbconvert==6.5.1
 nbformat==4.0.1
 neo4jdb==0.0.9
 networkx==1.11