diff --git a/requirements.txt b/requirements.txt
index f65e319..e731b4e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -66,7 +66,7 @@ lazy-object-proxy==1.3.1
 linecache2==1.0.0
 lxml==4.1.0
 Mako==1.0.7
-markdown2==2.3.5
+markdown2==2.4.0
 MarkupSafe==1.0
 # mate-tweak==18.4.0
 matplotlib==2.0.0