diff --git a/docs/requirements.txt b/docs/requirements.txt
index 1fed980..0fcbbde 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -24,7 +24,7 @@ idna==2.8
 imagesize==1.2.0
 Jinja2==2.11.1
 keyring==21.1.0
-markdown2==2.3.8
+markdown2==2.4.0
 MarkupSafe==1.1.1
 packaging==20.1
 Pillow==6.2.2