diff --git a/source/requirements.txt b/source/requirements.txt
index 072faf99c..1d0cba9b2 100644
--- a/source/requirements.txt
+++ b/source/requirements.txt
@@ -1,2 +1,2 @@
 Pelican==3.1.1
-Markdown==2.4
+Markdown==3.8.1