diff --git a/(1)TutorialPython_IPYTHON/requirements.txt b/(1)TutorialPython_IPYTHON/requirements.txt
index 1f85101..1af4fb1 100644
--- a/(1)TutorialPython_IPYTHON/requirements.txt
+++ b/(1)TutorialPython_IPYTHON/requirements.txt
@@ -50,7 +50,7 @@ Markdown==3.1.1
 MarkupSafe==1.1.1
 matplotlib==3.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 mock==3.0.5
 more-itertools==7.1.0
 mpl-finance==0.10.0