diff --git a/requirements.txt b/requirements.txt
index 7c80b450ab1..06eacf1da7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 ansible==2.9.18
+cryptography==2.8
 jinja2==2.11.3
 netaddr==0.7.19
 pbr==5.4.4