diff --git a/Computation-and-visualization-tool/Tensor_field_computation/requirements.txt b/Computation-and-visualization-tool/Tensor_field_computation/requirements.txt
index 9c15c33..ea9bca8 100644
--- a/Computation-and-visualization-tool/Tensor_field_computation/requirements.txt
+++ b/Computation-and-visualization-tool/Tensor_field_computation/requirements.txt
@@ -75,7 +75,7 @@ MarkupSafe==1.1.1
 matplotlib==2.2.4
 mistune==0.8.4
 mock==3.0.5
-nbconvert==5.4.0
+nbconvert==6.5.1
 nbformat==4.4.0
 networkx==2.2
 nltk==3.4.5