diff --git a/data-science-3/requirements.txt b/data-science-3/requirements.txt
index d807c7f..d543fc1 100644
--- a/data-science-3/requirements.txt
+++ b/data-science-3/requirements.txt
@@ -21,7 +21,7 @@ jupyter-core==4.4.0
 kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.1.0
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==7.0.0
 nbconvert==5.5.0
 nbformat==4.4.0