diff --git a/Computation-and-visualization-tool/Tensor_field_computation/requirements.txt b/Computation-and-visualization-tool/Tensor_field_computation/requirements.txt
index 9c15c33..7b3013c 100644
--- a/Computation-and-visualization-tool/Tensor_field_computation/requirements.txt
+++ b/Computation-and-visualization-tool/Tensor_field_computation/requirements.txt
@@ -73,7 +73,7 @@ kiwisolver==1.1.0
 Markdown==3.1.1
 MarkupSafe==1.1.1
 matplotlib==2.2.4
-mistune==0.8.4
+mistune==2.0.3
 mock==3.0.5
 nbconvert==5.4.0
 nbformat==4.4.0