diff --git a/azure-iot-device/azure/iot/device/constant.py b/azure-iot-device/azure/iot/device/constant.py
index 96b68978b..464c7d482 100644
--- a/azure-iot-device/azure/iot/device/constant.py
+++ b/azure-iot-device/azure/iot/device/constant.py
@@ -9,7 +9,7 @@
 VERSION = "2.1.2"
 IOTHUB_IDENTIFIER = "azure-iot-device-iothub-py"
 PROVISIONING_IDENTIFIER = "azure-iot-device-provisioning-py"
-IOTHUB_API_VERSION = "2018-06-30"
+IOTHUB_API_VERSION = "2019-10-01"
 PROVISIONING_API_VERSION = "2019-03-31"
 SECURITY_MESSAGE_INTERFACE_ID = "urn:azureiot:Security:SecurityAgent:1"
 TELEMETRY_MESSAGE_SIZE_LIMIT = 262144