diff --git a/requirements.txt b/requirements.txt
index 0acd7def..701c85ba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ Flask-WTF==1.0.1
 ItsDangerous==2.1.2
 Jinja2==3.1.2
 jira==2.0.0
-Markdown==2.6.11
+Markdown==3.5.2
 marshmallow==3.20.1
 MarkupSafe==2.1.2
 py-gfm==0.1.4