diff --git a/iot/api-client/codelabs/requirements.txt b/iot/api-client/codelabs/requirements.txt
index 80749471569..abc9ade127c 100644
--- a/iot/api-client/codelabs/requirements.txt
+++ b/iot/api-client/codelabs/requirements.txt
@@ -1,3 +1,3 @@
 cryptography==3.4.6
-paho-mqtt==1.5.1
+paho-mqtt==2.0.0
 pyjwt==2.0.1
diff --git a/iot/api-client/end_to_end_example/requirements.txt b/iot/api-client/end_to_end_example/requirements.txt
index 107ca6b28cd..958d370a730 100644
--- a/iot/api-client/end_to_end_example/requirements.txt
+++ b/iot/api-client/end_to_end_example/requirements.txt
@@ -4,4 +4,4 @@ google-auth-httplib2==0.1.0
 google-auth==1.28.0
 google-cloud-pubsub==2.4.0
 pyjwt==2.0.1
-paho-mqtt==1.5.1
+paho-mqtt==2.0.0
diff --git a/iot/api-client/gcs_file_to_device/requirements.txt b/iot/api-client/gcs_file_to_device/requirements.txt
index 10532997593..68784740268 100644
--- a/iot/api-client/gcs_file_to_device/requirements.txt
+++ b/iot/api-client/gcs_file_to_device/requirements.txt
@@ -5,5 +5,5 @@ google-cloud-iot==2.0.2
 google-cloud-pubsub==2.4.0
 google-cloud-storage==1.36.2
 cryptography==3.4.6
-paho-mqtt==1.5.1
+paho-mqtt==2.0.0
 pyjwt==2.0.1
diff --git a/iot/api-client/mqtt_example/requirements.txt b/iot/api-client/mqtt_example/requirements.txt
index 5682ca8cd83..ec4b6d5cd79 100644
--- a/iot/api-client/mqtt_example/requirements.txt
+++ b/iot/api-client/mqtt_example/requirements.txt
@@ -6,4 +6,4 @@ google-cloud-pubsub==2.4.0
 google-cloud-iot==2.0.2
 grpc-google-iam-v1==0.12.3
 pyjwt==2.0.1
-paho-mqtt==1.5.1
+paho-mqtt==2.0.0