diff --git a/requirements.txt b/requirements.txt
index 13f1b5ed..5dd1eb30 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ emoji             >= 2.0,    < 3.0
 filetype          >= 1.0.7,  < 2
 html_sanitizer    >= 1.9.1,  < 3
 lxml              >= 4.5.1,  < 5
-mistune           >= 2.0.0,  < 3.0
+mistune           >= 2.0.0,  < 4.0
 pymediainfo       >= 4.2.1,  < 5
 plyer             >= 1.4.3,  < 2
 sortedcontainers  >= 2.2.2,  < 3