diff --git a/samples/api-client/manager/requirements.txt b/samples/api-client/manager/requirements.txt
index c8d1dcea..6ba0f9ee 100644
--- a/samples/api-client/manager/requirements.txt
+++ b/samples/api-client/manager/requirements.txt
@@ -1,9 +1,9 @@
-cryptography==2.5
-flaky==3.5.3
+cryptography==2.7
+flaky==3.6.1
 gcp-devrel-py-tools==0.0.15
-google-api-python-client==1.7.8
+google-api-python-client==1.7.11
 google-auth-httplib2==0.0.3
-google-auth==1.6.2
+google-auth==1.6.3
 google-cloud-iot==0.3.0
 google-cloud-pubsub==1.0.0
 oauth2client==4.1.3