diff --git a/samples/api-client/manager/requirements.txt b/samples/api-client/manager/requirements.txt
index 1ee03604..178db090 100644
--- a/samples/api-client/manager/requirements.txt
+++ b/samples/api-client/manager/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==3.0
+cryptography==3.1
 flaky==3.7.0
 google-api-python-client==1.11.0
 google-auth-httplib2==0.0.4