diff --git a/requirements.txt b/requirements.txt
index de174a4838e..f7f6ad34a10 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 ansible==2.9.16
+cryptography==2.8
 jinja2==2.11.1
 netaddr==0.7.19
 pbr==5.4.4