diff --git a/config/requirements.txt b/config/requirements.txt
index be1f5c6..44ca618 100644
--- a/config/requirements.txt
+++ b/config/requirements.txt
@@ -23,7 +23,7 @@ ldap3
 # newer versions of matplotlib require python 3
 matplotlib>=2.1.0,<3.0
 mock>=1.0.1
-M2Crypto
+M2Crypto==0.36
 MySQL-python>=1.2.5
 jinja2
 ipython==5.3.0