diff --git a/aws-c-mqtt b/aws-c-mqtt
index 7a64df92c..2cea9fba8 160000
--- a/aws-c-mqtt
+++ b/aws-c-mqtt
@@ -1 +1 @@
-Subproject commit 7a64df92c1a70a9449fd701fbcc4c9ceebcc2fc3
+Subproject commit 2cea9fba8eb2414f8b729430992438383ab40fde
diff --git a/s2n b/s2n
index 084479261..4675f78e3 160000
--- a/s2n
+++ b/s2n
@@ -1 +1 @@
-Subproject commit 0844792610e76c11ff7ca22463d2d525a9ce844d
+Subproject commit 4675f78e3e7ecc573639e5a6e4ba8f60759e6df5
diff --git a/setup.py b/setup.py
index fe07531f3..578d20942 100644
--- a/setup.py
+++ b/setup.py
@@ -240,7 +240,7 @@ def awscrt_ext():
 
 setuptools.setup(
     name="awscrt",
-    version="0.3.0",
+    version="0.3.1",
     author="Amazon Web Services, Inc",
     author_email="aws-sdk-common-runtime@amazon.com",
     description="A common runtime for AWS Python projects",