diff --git a/requirements.txt b/requirements.txt
index 7a52034..90d8d96 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ idna==2.7
 itsdangerous==0.24
 Jinja2==2.10
 MarkupSafe==1.0
-mistune==0.8.3
+mistune==2.0.3
 pycparser==2.18
 pyOpenSSL==18.0.0
 PySocks==1.6.8