diff --git a/Duplicati/Library/Modules/Builtin/Duplicati.Library.Modules.Builtin.csproj b/Duplicati/Library/Modules/Builtin/Duplicati.Library.Modules.Builtin.csproj
index fad2aeab4..ea5413f3c 100644
--- a/Duplicati/Library/Modules/Builtin/Duplicati.Library.Modules.Builtin.csproj
+++ b/Duplicati/Library/Modules/Builtin/Duplicati.Library.Modules.Builtin.csproj
@@ -45,14 +45,6 @@
     <Reference Include="DnsLib">
       <HintPath>..\..\..\..\thirdparty\DnsLite\DnsLib.dll</HintPath>
     </Reference>
-    <Reference Include="MailKit, Version=1.2.0.0, Culture=neutral, PublicKeyToken=4e064fe7c44a8f1b, processorArchitecture=MSIL">
-      <HintPath>..\..\..\..\packages\MailKit.1.2.24\lib\net45\MailKit.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="MimeKit, Version=1.2.0.0, Culture=neutral, PublicKeyToken=bede1c8a46c66814, processorArchitecture=MSIL">
-      <HintPath>..\..\..\..\packages\MimeKit.1.2.25\lib\net45\MimeKit.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Net" />
     <Reference Include="Mono.Security" />
@@ -62,6 +54,15 @@
     <Reference Include="Newtonsoft.Json">
       <HintPath>..\..\..\..\packages\Newtonsoft.Json.9.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
+    <Reference Include="MimeKit">
+      <HintPath>..\..\..\..\packages\MimeKit.1.10.0\lib\net45\MimeKit.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Core" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Security" />
+    <Reference Include="MailKit">
+      <HintPath>..\..\..\..\packages\MailKit.1.10.0\lib\net45\MailKit.dll</HintPath>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="ConsolePasswordInput.cs" />
diff --git a/Duplicati/Library/Modules/Builtin/packages.config b/Duplicati/Library/Modules/Builtin/packages.config
index 7a5834e6c..c21ed5a3e 100644
--- a/Duplicati/Library/Modules/Builtin/packages.config
+++ b/Duplicati/Library/Modules/Builtin/packages.config
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="agsXMPP" version="1.1.1.0" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net45" />
   <package id="BouncyCastle" version="1.8.1" targetFramework="net45" />
-  <package id="MailKit" version="1.2.24" targetFramework="net45" />
-  <package id="MimeKit" version="1.2.25" targetFramework="net45" />
+  <package id="MailKit" version="1.10.0" targetFramework="net45" />
+  <package id="MimeKit" version="1.10.0" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net45" />
 </packages>
\ No newline at end of file