diff --git a/DNN Platform/Components/MailKit/MailKit.dnn b/DNN Platform/Components/MailKit/MailKit.dnn
index f9e57ce9f84..cd31ca2a7ea 100644
--- a/DNN Platform/Components/MailKit/MailKit.dnn	
+++ b/DNN Platform/Components/MailKit/MailKit.dnn	
@@ -1,6 +1,6 @@
 <dotnetnuke type="Package" version="5.0">
   <packages>
-    <package name="DotNetNuke.MailKit" type="Library" version="2.13.0">
+    <package name="DotNetNuke.MailKit" type="Library" version="2.15.0.0">
       <friendlyName>MailKit Components</friendlyName>
       <description>Libraries required for MailKit.</description>
       <dependencies/>
@@ -12,7 +12,7 @@
       </owner>
       <license src="License.txt"/>
       <releaseNotes>
-        This package includes MailKit assembly version 2.13.0.
+        This package includes MailKit assembly version 2.15.0 and MimeKit assembly version 2.15.1.
         Please go to http://www.mimekit.com/ to view release notes on this particular version.</releaseNotes>
       <components>
         <component type="Assembly">
@@ -20,22 +20,22 @@
             <assembly>
               <path>bin</path>
               <name>MailKit.dll</name>
-              <version>2.13.0</version>
+              <version>2.15.0.0</version>
             </assembly>
             <assembly>
               <path>bin</path>
               <name>MimeKit.dll</name>
-              <version>2.13.0</version>
+              <version>2.15.1.0</version>
             </assembly>
             <assembly>
               <path>bin</path>
               <name>BouncyCastle.Crypto.dll</name>
-              <version>1.8.10</version>
+              <version>1.8.10.1</version>
             </assembly>
             <assembly>
               <path>bin</path>
               <name>System.Buffers.dll</name>
-              <version>4.5.1</version>
+              <version>4.6.28619.01</version>
             </assembly>
           </assemblies>
         </component>
diff --git a/DNN Platform/Library/DotNetNuke.Library.csproj b/DNN Platform/Library/DotNetNuke.Library.csproj
index 3737b06d737..4a1740fb139 100644
--- a/DNN Platform/Library/DotNetNuke.Library.csproj	
+++ b/DNN Platform/Library/DotNetNuke.Library.csproj	
@@ -101,8 +101,8 @@
     <Reference Include="Lucene.Net.Contrib.FastVectorHighlighter">
       <HintPath>..\Components\Lucene.Net.Contrib\bin\Lucene.Net.Contrib.FastVectorHighlighter.dll</HintPath>
     </Reference>
-    <Reference Include="MailKit, Version=2.13.0.0, Culture=neutral, PublicKeyToken=4e064fe7c44a8f1b, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\MailKit.2.13.0\lib\net47\MailKit.dll</HintPath>
+    <Reference Include="MailKit, Version=2.15.0.0, Culture=neutral, PublicKeyToken=4e064fe7c44a8f1b, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\MailKit.2.15.0\lib\net47\MailKit.dll</HintPath>
     </Reference>
     <Reference Include="Microsoft.ApplicationBlocks.Data, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
@@ -124,8 +124,8 @@
       <HintPath>..\..\packages\Microsoft.Web.Infrastructure.1.0.0.0\lib\net40\Microsoft.Web.Infrastructure.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="MimeKit, Version=2.13.0.0, Culture=neutral, PublicKeyToken=bede1c8a46c66814, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\MimeKit.2.13.0\lib\net47\MimeKit.dll</HintPath>
+    <Reference Include="MimeKit, Version=2.15.0.0, Culture=neutral, PublicKeyToken=bede1c8a46c66814, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\MimeKit.2.15.1\lib\net47\MimeKit.dll</HintPath>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\..\packages\Newtonsoft.Json.10.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
diff --git a/DNN Platform/Library/packages.config b/DNN Platform/Library/packages.config
index 573783eb33c..fb905e72231 100644
--- a/DNN Platform/Library/packages.config	
+++ b/DNN Platform/Library/packages.config	
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Dnn.ClientDependency" version="1.9.10" targetFramework="net472" />
-  <package id="MailKit" version="2.13.0" targetFramework="net472" />
+  <package id="MailKit" version="2.15.0" targetFramework="net472" />
   <package id="Microsoft.AspNet.Razor" version="3.2.7" targetFramework="net472" />
   <package id="Microsoft.AspNet.WebPages" version="3.2.7" targetFramework="net472" />
   <package id="Microsoft.Build.Tasks.Git" version="1.0.0" targetFramework="net472" developmentDependency="true" />
@@ -11,7 +11,7 @@
   <package id="Microsoft.SourceLink.Common" version="1.0.0" targetFramework="net472" developmentDependency="true" />
   <package id="Microsoft.SourceLink.GitHub" version="1.0.0" targetFramework="net472" developmentDependency="true" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
-  <package id="MimeKit" version="2.13.0" targetFramework="net472" />
+  <package id="MimeKit" version="2.15.1" targetFramework="net472" />
   <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net45" />
   <package id="PetaPoco.Compiled" version="6.0.480" targetFramework="net472" />
   <package id="Portable.BouncyCastle" version="1.8.10" targetFramework="net472" />