diff --git a/setup.py b/setup.py
index 2a72740..4baee68 100644
--- a/setup.py
+++ b/setup.py
@@ -49,7 +49,8 @@ setup(
         'tenacity==8.2.2',
         'cachetools==5.3.0',
         'circuitbreaker==2.0.0',
-        'shortuuid==1.0.11'
+        'shortuuid==1.0.11',
+        'cryptography'
     ],
     extras_require={
         'nameko': ['nameko==3.0.0rc11',