diff --git a/Azure.Devices.DeviceClient/Azure.Devices.DeviceClient.nfproj b/Azure.Devices.DeviceClient/Azure.Devices.DeviceClient.nfproj
index 453a231..2040fff 100644
--- a/Azure.Devices.DeviceClient/Azure.Devices.DeviceClient.nfproj
+++ b/Azure.Devices.DeviceClient/Azure.Devices.DeviceClient.nfproj
@@ -65,7 +65,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.M2Mqtt, Version=5.0.2.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.M2Mqtt.5.0.2-preview.37\lib\nanoFramework.M2Mqtt.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.M2Mqtt.5.0.2-preview.39\lib\nanoFramework.M2Mqtt.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Events, Version=1.9.2.3, Culture=neutral, PublicKeyToken=c07d481e9758c731">
diff --git a/Azure.Devices.DeviceClient/packages.config b/Azure.Devices.DeviceClient/packages.config
index 5da37f9..a566a82 100644
--- a/Azure.Devices.DeviceClient/packages.config
+++ b/Azure.Devices.DeviceClient/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.11.7" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Json" version="2.1.1" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.M2Mqtt" version="5.0.2-preview.37" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.M2Mqtt" version="5.0.2-preview.39" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Events" version="1.9.2" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Native" version="1.5.2" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Collections" version="1.3.0" targetFramework="netnanoframework10" />
diff --git a/nanoFramework.Azure.Devices.Client.nuspec b/nanoFramework.Azure.Devices.Client.nuspec
index 05d5667..56e59a8 100644
--- a/nanoFramework.Azure.Devices.Client.nuspec
+++ b/nanoFramework.Azure.Devices.Client.nuspec
@@ -22,7 +22,7 @@ This is an SDK for Azure IoT Hub using MQTT broker.</description>
     <dependencies>
       <dependency id="nanoFramework.CoreLibrary" version="1.11.7" />
       <dependency id="nanoFramework.Json" version="2.1.1" />
-      <dependency id="nanoFramework.M2Mqtt" version="5.0.2-preview.37" />
+      <dependency id="nanoFramework.M2Mqtt" version="5.0.2-preview.39" />
       <dependency id="nanoFramework.Runtime.Events" version="1.9.2" />
       <dependency id="nanoFramework.Runtime.Native" version="1.5.2" />
       <dependency id="nanoFramework.System.Collections" version="1.3.0" />