diff --git a/samples/api-client/accesstoken_example/requirements.txt b/samples/api-client/accesstoken_example/requirements.txt
index 07c901e4..e32727ea 100644
--- a/samples/api-client/accesstoken_example/requirements.txt
+++ b/samples/api-client/accesstoken_example/requirements.txt
@@ -1,6 +1,6 @@
 cryptography==38.0.1
 flaky==3.7.0
-google-api-python-client==2.63.0
+google-api-python-client==2.64.0
 google-auth-httplib2==0.1.0
 google-auth==2.12.0
 google-cloud-iot==2.6.3
diff --git a/samples/api-client/manager/requirements.txt b/samples/api-client/manager/requirements.txt
index c39b8eef..14ad08b0 100644
--- a/samples/api-client/manager/requirements.txt
+++ b/samples/api-client/manager/requirements.txt
@@ -1,6 +1,6 @@
 cryptography==38.0.1
 flaky==3.7.0
-google-api-python-client==2.63.0
+google-api-python-client==2.64.0
 google-auth-httplib2==0.1.0
 google-auth==2.12.0
 google-cloud-iot==2.6.3