diff --git a/compute/encryption/requirements.txt b/compute/encryption/requirements.txt
index da387f8eac3..1d8b7f95762 100644
--- a/compute/encryption/requirements.txt
+++ b/compute/encryption/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.8
+cryptography==2.9
 requests==2.23.0
 google-api-python-client==1.8.0
 google-auth==1.14.0
diff --git a/iap/requirements.txt b/iap/requirements.txt
index a1f55b3d4cb..2e81d83a04e 100644
--- a/iap/requirements.txt
+++ b/iap/requirements.txt
@@ -1,5 +1,5 @@
 PyJWT==1.7.1
-cryptography==2.8
+cryptography==2.9
 flask==1.1.2
 google-auth==1.14.0
 gunicorn==20.0.4
diff --git a/iot/api-client/codelabs/requirements.txt b/iot/api-client/codelabs/requirements.txt
index 3fb91c59adb..274f2df8aaa 100644
--- a/iot/api-client/codelabs/requirements.txt
+++ b/iot/api-client/codelabs/requirements.txt
@@ -1,3 +1,3 @@
-cryptography==2.8
+cryptography==2.9
 paho-mqtt==1.5.0
 pyjwt==1.7.1
diff --git a/iot/api-client/end_to_end_example/requirements.txt b/iot/api-client/end_to_end_example/requirements.txt
index e1715633329..e83a1680c5b 100644
--- a/iot/api-client/end_to_end_example/requirements.txt
+++ b/iot/api-client/end_to_end_example/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.8
+cryptography==2.9
 google-api-python-client==1.8.0
 google-auth-httplib2==0.0.3
 google-auth==1.14.0
diff --git a/iot/api-client/gcs_file_to_device/requirements.txt b/iot/api-client/gcs_file_to_device/requirements.txt
index 400cfded191..713e85854df 100644
--- a/iot/api-client/gcs_file_to_device/requirements.txt
+++ b/iot/api-client/gcs_file_to_device/requirements.txt
@@ -4,6 +4,6 @@ google-auth-httplib2==0.0.3
 google-cloud-iot==1.0.0
 google-cloud-pubsub==1.0.0
 google-cloud-storage==1.26.0
-cryptography==2.8
+cryptography==2.9
 paho-mqtt==1.5.0
 pyjwt==1.7.1
diff --git a/iot/api-client/http_example/requirements.txt b/iot/api-client/http_example/requirements.txt
index c38cc08721c..4b126880a47 100644
--- a/iot/api-client/http_example/requirements.txt
+++ b/iot/api-client/http_example/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.8
+cryptography==2.9
 google-api-python-client==1.8.0
 google-auth-httplib2==0.0.3
 google-auth==1.14.0
diff --git a/iot/api-client/manager/requirements.txt b/iot/api-client/manager/requirements.txt
index 5fc42567c15..5918123f543 100644
--- a/iot/api-client/manager/requirements.txt
+++ b/iot/api-client/manager/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.8
+cryptography==2.9
 flaky==3.6.1
 google-api-python-client==1.8.0
 google-auth-httplib2==0.0.3
diff --git a/iot/api-client/mqtt_example/requirements.txt b/iot/api-client/mqtt_example/requirements.txt
index ae57153f32d..9b366117723 100644
--- a/iot/api-client/mqtt_example/requirements.txt
+++ b/iot/api-client/mqtt_example/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.8
+cryptography==2.9
 flaky==3.6.1
 gcp-devrel-py-tools==0.0.15
 google-api-python-client==1.8.0
diff --git a/kms/api-client/requirements.txt b/kms/api-client/requirements.txt
index c10519b9857..aaf2ea5f26e 100644
--- a/kms/api-client/requirements.txt
+++ b/kms/api-client/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-kms==1.4.0
-cryptography==2.8
+cryptography==2.9