diff --git a/crt/aws-c-common b/crt/aws-c-common
index 4639b27bf..cba230815 160000
--- a/crt/aws-c-common
+++ b/crt/aws-c-common
@@ -1 +1 @@
-Subproject commit 4639b27bf04559b0414e029bb6c22856f356da5a
+Subproject commit cba230815132f53206c501874e03a286765fb225
diff --git a/crt/aws-c-io b/crt/aws-c-io
index da95b34ef..cb9dcea96 160000
--- a/crt/aws-c-io
+++ b/crt/aws-c-io
@@ -1 +1 @@
-Subproject commit da95b34ef3f247c5b8dbe266251f09e15e9b7f0c
+Subproject commit cb9dcea961701791ca3012c3eeea81864e08aebe
diff --git a/crt/aws-c-mqtt b/crt/aws-c-mqtt
index 60f9a179c..6168e32bf 160000
--- a/crt/aws-c-mqtt
+++ b/crt/aws-c-mqtt
@@ -1 +1 @@
-Subproject commit 60f9a179c1a599cbf217edcccc9dd008c8e9b787
+Subproject commit 6168e32bf9f745dec40df633b78baa03420b7f83
diff --git a/crt/aws-c-s3 b/crt/aws-c-s3
index 8655417a9..76f49fbfa 160000
--- a/crt/aws-c-s3
+++ b/crt/aws-c-s3
@@ -1 +1 @@
-Subproject commit 8655417a9c6940e6373cbcb4fb93b823317bccb9
+Subproject commit 76f49fbfa9deabd464842900744fad10a44314b4
diff --git a/crt/s2n b/crt/s2n
index ab9a3be5a..7d02417a5 160000
--- a/crt/s2n
+++ b/crt/s2n
@@ -1 +1 @@
-Subproject commit ab9a3be5a8abcbc5bd7bdba662497a717737c838
+Subproject commit 7d02417a575b62c50ba08d791d11495238164815