diff --git a/Tutorial_SVM/requirements.txt b/Tutorial_SVM/requirements.txt
old mode 100755
new mode 100644
index 4d9577c..c5125a5
--- a/Tutorial_SVM/requirements.txt
+++ b/Tutorial_SVM/requirements.txt
@@ -28,7 +28,7 @@ jupyterlab-server==0.2.0
 kiwisolver==1.0.1
 MarkupSafe==1.1.1
 matplotlib==3.0.3
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.4.1
 nbdime==1.0.5
 nbformat==4.4.0