diff --git a/kubernetes/2_microservices/thoughts_backend/ThoughtsBackend/requirements.txt b/kubernetes/2_microservices/thoughts_backend/ThoughtsBackend/requirements.txt
index 7b8e9c2..6972fc3 100644
--- a/kubernetes/2_microservices/thoughts_backend/ThoughtsBackend/requirements.txt
+++ b/kubernetes/2_microservices/thoughts_backend/ThoughtsBackend/requirements.txt
@@ -7,7 +7,7 @@ freezegun==0.1.11
 delorean==1.0.0
 faker==1.0.7
 pyjwt==1.7.1
-cryptography==2.6.1
+cryptography==39.0.1
 parse==1.12.0
 psycopg2==2.8.2
 flake8==3.7.7