diff --git a/req.txt b/req.txt
index b0add3d..2ecd591 100644
--- a/req.txt
+++ b/req.txt
@@ -18,7 +18,7 @@ jupyter-core==4.4.0
 kiwisolver==1.0.1
 MarkupSafe==1.0
 matplotlib==2.2.3
-mistune==0.8.3
+mistune==2.0.3
 mpld3==0.3
 nbconvert==5.3.1
 nbformat==4.4.0
diff --git a/requirements.txt b/requirements.txt
index 8fab704..35d91c1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ jupyter-core==4.4.0
 kiwisolver==1.0.1
 MarkupSafe==1.0
 matplotlib==2.2.3
-mistune==0.8.3
+mistune==2.0.3
 nbconvert==5.3.1
 nbformat==4.4.0
 notebook==5.6.0