diff --git a/crt/aws-c-event-stream b/crt/aws-c-event-stream
index acc869ecb..f43a3d24a 160000
--- a/crt/aws-c-event-stream
+++ b/crt/aws-c-event-stream
@@ -1 +1 @@
-Subproject commit acc869ecbafad139f9ef07ded0c74045910edfc8
+Subproject commit f43a3d24a7c1f8b50f709ccb4fdf4c7fd2827fff
diff --git a/crt/aws-c-io b/crt/aws-c-io
index 4c48e60df..996d42e48 160000
--- a/crt/aws-c-io
+++ b/crt/aws-c-io
@@ -1 +1 @@
-Subproject commit 4c48e60df22214cdf8f2ed50214ea0a58cadabc3
+Subproject commit 996d42e484a3749c4dd05e4e9fed1d38de95eb81