diff --git a/crt/aws-c-common b/crt/aws-c-common
index 5e64b0393..4a4407126 160000
--- a/crt/aws-c-common
+++ b/crt/aws-c-common
@@ -1 +1 @@
-Subproject commit 5e64b039356c72d17fcf1fb0bfc7637f8c2270f7
+Subproject commit 4a4407126c3f4ed67eea72c924e72e2fdc1f3cd4
diff --git a/crt/aws-c-http b/crt/aws-c-http
index dd3446198..998946100 160000
--- a/crt/aws-c-http
+++ b/crt/aws-c-http
@@ -1 +1 @@
-Subproject commit dd34461987947672444d0bc872c5a733dfdb9711
+Subproject commit 99894610086372df1cf09d62b9eafca42eb53f5b
diff --git a/crt/aws-c-io b/crt/aws-c-io
index b52181af6..f2ff573c1 160000
--- a/crt/aws-c-io
+++ b/crt/aws-c-io
@@ -1 +1 @@
-Subproject commit b52181af655c090713fe01f14d7ccb95aab8dec5
+Subproject commit f2ff573c191e1c4ea0248af5c08161356be3bc78
diff --git a/crt/aws-c-mqtt b/crt/aws-c-mqtt
index 33c3455ce..173bbb215 160000
--- a/crt/aws-c-mqtt
+++ b/crt/aws-c-mqtt
@@ -1 +1 @@
-Subproject commit 33c3455cec82b16feb940e12006cefd7b3ef4194
+Subproject commit 173bbb2155702b8cbb11abee2b767fdafd31fa6c