diff --git a/requirements.txt b/requirements.txt
index 2024cf92..f04cd0c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ jdcal==1.3
 jedi==0.9.0
 jinja2==2.7
 libmodernize==0.5
-markdown==2.6.2
+markdown==3.8
 markdown2==2.2.1
 markupsafe
 matplotlib==1.4.0