diff --git a/setup.py b/setup.py
index 20dca581..8179fbfe 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@
     url='https://github.com/aws/aws-iot-device-sdk-python-v2',
     packages=['awsiot'],
     install_requires=[
-        'awscrt==0.9.0',
+        'awscrt==0.9.3',
     ],
     python_requires='>=3.5',
 )