diff --git a/kms/attestations/requirements.txt b/kms/attestations/requirements.txt
index 036cf984150d..9f3e724fee12 100644
--- a/kms/attestations/requirements.txt
+++ b/kms/attestations/requirements.txt
@@ -1,2 +1,2 @@
-cryptography==2.8
+cryptography==2.9.2
 pem==20.1.0