diff --git a/codes/statisticalAnalysisLearning/statisticalLearning/FirstCourseMachineLearningCode/requirements.txt b/codes/statisticalAnalysisLearning/statisticalLearning/FirstCourseMachineLearningCode/requirements.txt
index b605379..69f38f1 100644
--- a/codes/statisticalAnalysisLearning/statisticalLearning/FirstCourseMachineLearningCode/requirements.txt
+++ b/codes/statisticalAnalysisLearning/statisticalLearning/FirstCourseMachineLearningCode/requirements.txt
@@ -22,7 +22,7 @@ jupyter-console==5.0.0
 jupyter-core==4.2.1
 MarkupSafe==0.23
 matplotlib==1.5.3
-mistune==0.7.3
+mistune==0.8.1
 nbconvert==5.0.0
 nbformat==4.2.0
 notebook==4.3.1