diff --git a/compute/encryption/requirements.txt b/compute/encryption/requirements.txt
index 46ede6b8b7cb..59937a1b8e02 100644
--- a/compute/encryption/requirements.txt
+++ b/compute/encryption/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==3.0
+cryptography==3.1
 requests==2.24.0
 google-api-python-client==1.10.1
 google-auth==1.20.1
diff --git a/iap/requirements.txt b/iap/requirements.txt
index 3c24afd9dccd..1aa4a691e5c1 100644
--- a/iap/requirements.txt
+++ b/iap/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==3.0
+cryptography==3.1
 flask==1.1.2
 google-auth==1.20.1
 gunicorn==20.0.4
diff --git a/iot/api-client/codelabs/requirements.txt b/iot/api-client/codelabs/requirements.txt
index 0c135837ac66..e14f5a60dbbe 100644
--- a/iot/api-client/codelabs/requirements.txt
+++ b/iot/api-client/codelabs/requirements.txt
@@ -1,3 +1,3 @@
-cryptography==3.0
+cryptography==3.1
 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 5e9de8670cb3..95e75ee813c9 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==3.0
+cryptography==3.1
 google-api-python-client==1.10.1
 google-auth-httplib2==0.0.4
 google-auth==1.20.1
diff --git a/iot/api-client/gcs_file_to_device/requirements.txt b/iot/api-client/gcs_file_to_device/requirements.txt
index a7f1c0a4ebc2..069e29b0876f 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==0.0.4
 google-cloud-iot==1.0.0
 google-cloud-pubsub==1.7.0
 google-cloud-storage==1.30.0
-cryptography==3.0
+cryptography==3.1
 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 e1e82de8ae29..e381cad40438 100644
--- a/iot/api-client/http_example/requirements.txt
+++ b/iot/api-client/http_example/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==3.0
+cryptography==3.1
 google-api-python-client==1.10.1
 google-auth-httplib2==0.0.4
 google-auth==1.20.1
diff --git a/iot/api-client/manager/requirements.txt b/iot/api-client/manager/requirements.txt
index 9c0cb98fce78..bf8b5e05ead7 100644
--- a/iot/api-client/manager/requirements.txt
+++ b/iot/api-client/manager/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==3.0
+cryptography==3.1
 flaky==3.7.0
 google-api-python-client==1.10.1
 google-auth-httplib2==0.0.4
diff --git a/iot/api-client/mqtt_example/requirements.txt b/iot/api-client/mqtt_example/requirements.txt
index e42241b9d55c..de167d38a2d7 100644
--- a/iot/api-client/mqtt_example/requirements.txt
+++ b/iot/api-client/mqtt_example/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==3.0
+cryptography==3.1
 google-api-python-client==1.10.1
 google-auth-httplib2==0.0.4
 google-auth==1.20.1