diff --git a/requirements.txt b/requirements.txt
index ed19cc48..3be1fd6f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -55,7 +55,7 @@ httplib2==0.9.2
 idna==2.1
 ipaddress==1.0.17
 lxml==4.1.1
-markdown2==2.3.0
+markdown2==2.3.6
 numpy==1.12.0
 oauthlib==2.0.1
 paramiko==2.1.1