diff --git a/requirement.txt b/requirement.txt
index 78b2ea6..4fdb381 100644
--- a/requirement.txt
+++ b/requirement.txt
@@ -31,7 +31,7 @@ kiwisolver==1.0.1
 lifelines==0.18.3
 MarkupSafe==1.1.0
 matplotlib==2.2.3
-mistune==0.8.4
+mistune==3.2.1
 nbconvert==5.4.1
 nbformat==4.4.0
 notebook==5.7.4
diff --git a/requirements.txt b/requirements.txt
index 540bc33..f2331e8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ llvmlite>=0.29.0
 Markdown>=3.0.1
 MarkupSafe>=1.1.0
 matplotlib>=3.0.2
-mistune==0.8.4
+mistune==3.2.1
 mock>=3.0.5
 natsort>=6.0.0
 nbconvert>=5.4.0