diff --git a/crt/aws-c-s3 b/crt/aws-c-s3
index 33b8cd07c..21a4ab4da 160000
--- a/crt/aws-c-s3
+++ b/crt/aws-c-s3
@@ -1 +1 @@
-Subproject commit 33b8cd07c53068e1408f85ae956c44c9753df0f3
+Subproject commit 21a4ab4dacd1eaf61e6c044c7a299d68fd4c1876
diff --git a/crt/s2n b/crt/s2n
index 493b77167..2e79e7efe 160000
--- a/crt/s2n
+++ b/crt/s2n
@@ -1 +1 @@
-Subproject commit 493b77167dc367c394de23cfe78a029298e2a254
+Subproject commit 2e79e7efeb26f06eb59a1d4f3444ea63fc3e20c3