diff --git a/lower-constraints.txt b/lower-constraints.txt
index ab7e115f3..e6a552bc7 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -4,6 +4,7 @@ attrs==17.4.0
 bandit==1.1.0
 colorama==0.3.9
 coverage==4.0
+cryptography==2.7
 debtcollector==1.19.0
 decorator==3.4.0
 extras==1.0.0
diff --git a/test-requirements.txt b/test-requirements.txt
index bbcc35fff..29383c0d2 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -19,6 +19,7 @@ bandit>=1.1.0 # Apache-2.0
 gabbi>=1.35.0 # Apache-2.0
 
 # placement functional tests
+cryptography>=2.7
 wsgi-intercept>=1.7.0 # MIT License
 
 # needed to generate osprofiler config options