diff --git a/crt/aws-c-event-stream b/crt/aws-c-event-stream
index e87537be5..956f3442f 160000
--- a/crt/aws-c-event-stream
+++ b/crt/aws-c-event-stream
@@ -1 +1 @@
-Subproject commit e87537be561d753ec82e783bc0929b1979c585f8
+Subproject commit 956f3442f6b9132f68b21d0604316fd11b698c7a
diff --git a/crt/aws-c-io b/crt/aws-c-io
index 8f4508f5e..8b93aaed5 160000
--- a/crt/aws-c-io
+++ b/crt/aws-c-io
@@ -1 +1 @@
-Subproject commit 8f4508f5ec7d2949d5545e2b1ddcd1beb47a76a8
+Subproject commit 8b93aaed5e2ae26f459380bbdbc90ee1e578f8d3