diff --git a/ports/azure-c-shared-utility/CONTROL b/ports/azure-c-shared-utility/CONTROL
index 2db25a398..f7e0a0fdd 100644
--- a/ports/azure-c-shared-utility/CONTROL
+++ b/ports/azure-c-shared-utility/CONTROL
@@ -1,5 +1,5 @@
 Source: azure-c-shared-utility
-Version: 2019-03-18-1
+Version: 2019-05-16
 Description: Azure C SDKs common code
 Build-Depends: curl (linux), openssl (linux), azure-macro-utils-c, umock-c
 
diff --git a/ports/azure-iot-sdk-c/CONTROL b/ports/azure-iot-sdk-c/CONTROL
index 5cd4d2539..cfca96393 100644
--- a/ports/azure-iot-sdk-c/CONTROL
+++ b/ports/azure-iot-sdk-c/CONTROL
@@ -1,5 +1,5 @@
 Source: azure-iot-sdk-c
-Version: 2019-03-18-1
+Version: 2019-05-16
 Build-Depends: azure-uamqp-c, azure-umqtt-c, azure-c-shared-utility, parson, azure-uhttp-c, azure-macro-utils-c, umock-c
 Description: A C99 SDK for connecting devices to Microsoft Azure IoT services 
 
diff --git a/ports/azure-iot-sdk-c/portfile.cmake b/ports/azure-iot-sdk-c/portfile.cmake
index 08c569086..bfd7703c8 100644
--- a/ports/azure-iot-sdk-c/portfile.cmake
+++ b/ports/azure-iot-sdk-c/portfile.cmake
@@ -15,8 +15,8 @@ else()
     vcpkg_from_github(
         OUT_SOURCE_PATH SOURCE_PATH
         REPO Azure/azure-iot-sdk-c
-        REF b386a10688e9f74c4627cedb9c35a40525c963d1
-        SHA512 5bb609bf5dda810b38cc34d5e43fb8a4b67cd417c86da8d17508f0d2f87b858647af402214fdce967df5917a58e036454b17d8c67a1331276f36c39a75cf135c
+        REF 11d5150aeb26635862cf50484af9c7e8badd52a0
+        SHA512 d2cf40bca9db2c66d78f889763af3a1d06abc0e9fce19542599daec56b092e03f01f892ff420a7b107a96e0eb533579ee7eccf249b56cf6600896c77ca619fc3
         HEAD_REF master
         PATCHES improve-external-deps.patch
     )
diff --git a/ports/azure-macro-utils-c/CONTROL b/ports/azure-macro-utils-c/CONTROL
index 3905f38a6..72840172b 100644
--- a/ports/azure-macro-utils-c/CONTROL
+++ b/ports/azure-macro-utils-c/CONTROL
@@ -1,5 +1,5 @@
 Source: azure-macro-utils-c
-Version: 2019-04-11-1
+Version: 2019-05-16
 Description: A library of macros for the Azure IoT SDK Suite
 Build-Depends: 
 
diff --git a/ports/azure-uamqp-c/CONTROL b/ports/azure-uamqp-c/CONTROL
index 569f40006..2576f3e98 100644
--- a/ports/azure-uamqp-c/CONTROL
+++ b/ports/azure-uamqp-c/CONTROL
@@ -1,5 +1,5 @@
 Source: azure-uamqp-c
-Version: 2019-03-18-1
+Version: 2019-05-16
 Build-Depends: azure-c-shared-utility, azure-macro-utils-c, umock-c
 Description: AMQP library for C
 
diff --git a/ports/azure-uhttp-c/CONTROL b/ports/azure-uhttp-c/CONTROL
index 2b91ad876..c5cc71cfd 100644
--- a/ports/azure-uhttp-c/CONTROL
+++ b/ports/azure-uhttp-c/CONTROL
@@ -1,5 +1,5 @@
 Source: azure-uhttp-c
-Version: 2019-03-18-1
+Version: 2019-05-16
 Build-Depends: azure-c-shared-utility, azure-macro-utils-c, umock-c
 Description: Azure HTTP Library written in C
 
diff --git a/ports/azure-umqtt-c/CONTROL b/ports/azure-umqtt-c/CONTROL
index 2f7730868..98019eb69 100644
--- a/ports/azure-umqtt-c/CONTROL
+++ b/ports/azure-umqtt-c/CONTROL
@@ -1,5 +1,5 @@
 Source: azure-umqtt-c
-Version: 2019-03-18-1
+Version: 2019-05-16
 Build-Depends: azure-c-shared-utility, azure-macro-utils-c, umock-c
 Description: General purpose library for communication over the mqtt protocol
 
diff --git a/ports/umock-c/CONTROL b/ports/umock-c/CONTROL
index 8ec46e3aa..a04bdc73b 100644
--- a/ports/umock-c/CONTROL
+++ b/ports/umock-c/CONTROL
@@ -1,5 +1,5 @@
 Source: umock-c
-Version: 2019-04-11-1
+Version: 2019-05-16
 Description: A pure C mocking library
 Build-Depends: azure-macro-utils-c