diff --git a/compute/encryption/requirements.txt b/compute/encryption/requirements.txt
index d215d976e4c..aa132218dd8 100644
--- a/compute/encryption/requirements.txt
+++ b/compute/encryption/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.9.2
+cryptography==3.0
 requests==2.24.0
 google-api-python-client==1.10.0
 google-auth==1.19.2
diff --git a/iap/requirements.txt b/iap/requirements.txt
index 02f48fb7429..aee2f693dc6 100644
--- a/iap/requirements.txt
+++ b/iap/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.9.2
+cryptography==3.0
 flask==1.1.2
 google-auth==1.19.2
 gunicorn==20.0.4
diff --git a/iot/api-client/codelabs/requirements.txt b/iot/api-client/codelabs/requirements.txt
index 8ad04c289b1..0c135837ac6 100644
--- a/iot/api-client/codelabs/requirements.txt
+++ b/iot/api-client/codelabs/requirements.txt
@@ -1,3 +1,3 @@
-cryptography==2.9.2
+cryptography==3.0
 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 c123f6e312b..8b175d9ea1f 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==2.9.2
+cryptography==3.0
 google-api-python-client==1.10.0
 google-auth-httplib2==0.0.4
 google-auth==1.19.2
diff --git a/iot/api-client/gcs_file_to_device/requirements.txt b/iot/api-client/gcs_file_to_device/requirements.txt
index 6d76a2a0529..fdbad4f246c 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==1.29.0
-cryptography==2.9.2
+cryptography==3.0
 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 19c9a58e96e..76a1f9fdac3 100644
--- a/iot/api-client/http_example/requirements.txt
+++ b/iot/api-client/http_example/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.9.2
+cryptography==3.0
 google-api-python-client==1.10.0
 google-auth-httplib2==0.0.4
 google-auth==1.19.2
diff --git a/iot/api-client/manager/requirements.txt b/iot/api-client/manager/requirements.txt
index be3f5572757..df07b47c739 100644
--- a/iot/api-client/manager/requirements.txt
+++ b/iot/api-client/manager/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.9.2
+cryptography==3.0
 flaky==3.7.0
 google-api-python-client==1.10.0
 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 14cef043074..1631415668f 100644
--- a/iot/api-client/mqtt_example/requirements.txt
+++ b/iot/api-client/mqtt_example/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==2.9.2
+cryptography==3.0
 google-api-python-client==1.10.0
 google-auth-httplib2==0.0.4
 google-auth==1.19.2