diff --git a/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/QuickLook.Plugin.ArchiveViewer.csproj b/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/QuickLook.Plugin.ArchiveViewer.csproj
index abcd222..9e9602d 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/QuickLook.Plugin.ArchiveViewer.csproj
+++ b/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/QuickLook.Plugin.ArchiveViewer.csproj
@@ -66,8 +66,8 @@
     <Reference Include="System.Core" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Xaml" />
-    <Reference Include="UtfUnknown, Version=1.0.0.0, Culture=neutral, PublicKeyToken=90217ce7a23260d4, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\UTF.Unknown.1.0.0\lib\net40\UtfUnknown.dll</HintPath>
+    <Reference Include="UtfUnknown, Version=2.0.0.0, Culture=neutral, PublicKeyToken=90217ce7a23260d4, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\UTF.Unknown.2.0.0-rc1\lib\net40\UtfUnknown.dll</HintPath>
     </Reference>
     <Reference Include="WindowsBase" />
   </ItemGroup>
diff --git a/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/packages.config b/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/packages.config
index 93a98c4..8f5547b 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/packages.config
+++ b/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="SharpCompress" version="0.23.0" targetFramework="net462" />
-  <package id="UTF.Unknown" version="1.0.0" targetFramework="net462" />
+  <package id="UTF.Unknown" version="2.0.0-rc1" targetFramework="net462" />
 </packages>
\ No newline at end of file
diff --git a/QuickLook.Plugin/QuickLook.Plugin.MailViewer/QuickLook.Plugin.MailViewer.csproj b/QuickLook.Plugin/QuickLook.Plugin.MailViewer/QuickLook.Plugin.MailViewer.csproj
index ce4b400..36611cf 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.MailViewer/QuickLook.Plugin.MailViewer.csproj
+++ b/QuickLook.Plugin/QuickLook.Plugin.MailViewer/QuickLook.Plugin.MailViewer.csproj
@@ -56,21 +56,9 @@
     </AssemblyOriginatorKeyFile>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Itenso.Rtf.Converter.Html, Version=1.7.0.0, Culture=neutral, PublicKeyToken=d7f23b760ed5c748, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\MSGReader.2.1.5\lib\Itenso.Rtf.Converter.Html.dll</HintPath>
-    </Reference>
-    <Reference Include="Itenso.Rtf.Interpreter, Version=1.7.0.0, Culture=neutral, PublicKeyToken=d7f23b760ed5c748, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\MSGReader.2.1.5\lib\Itenso.Rtf.Interpreter.dll</HintPath>
-    </Reference>
-    <Reference Include="Itenso.Rtf.Parser, Version=1.7.0.0, Culture=neutral, PublicKeyToken=d7f23b760ed5c748, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\MSGReader.2.1.5\lib\Itenso.Rtf.Parser.dll</HintPath>
-    </Reference>
-    <Reference Include="Itenso.Sys, Version=2.3.0.0, Culture=neutral, PublicKeyToken=d7f23b760ed5c748, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\MSGReader.2.1.5\lib\Itenso.Sys.dll</HintPath>
-    </Reference>
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="MsgReader, Version=3.7.0.0, Culture=neutral, PublicKeyToken=3ba01cf3434959fa, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\MsgReader.3.7.0\lib\net45\MsgReader.dll</HintPath>
+    <Reference Include="MsgReader, Version=3.7.3.0, Culture=neutral, PublicKeyToken=3ba01cf3434959fa, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\MsgReader.3.7.3\lib\net45\MsgReader.dll</HintPath>
     </Reference>
     <Reference Include="OpenMcdf, Version=2.2.1.2, Culture=neutral, PublicKeyToken=fdbb1629d7c00800, processorArchitecture=MSIL">
       <HintPath>..\..\packages\OpenMcdf.2.2.1.3\lib\net40\OpenMcdf.dll</HintPath>
diff --git a/QuickLook.Plugin/QuickLook.Plugin.MailViewer/packages.config b/QuickLook.Plugin/QuickLook.Plugin.MailViewer/packages.config
index efefbb1..a026a5b 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.MailViewer/packages.config
+++ b/QuickLook.Plugin/QuickLook.Plugin.MailViewer/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="MsgReader" version="3.7.0" targetFramework="net462" />
+  <package id="MsgReader" version="3.7.3" targetFramework="net462" />
   <package id="OpenMcdf" version="2.2.1.3" targetFramework="net462" />
 </packages>
\ No newline at end of file
diff --git a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj
index 65374fd..2aba831 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj
+++ b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj
@@ -66,8 +66,8 @@
     <Reference Include="System.Core" />
     <Reference Include="System.Xaml" />
     <Reference Include="System.Xml" />
-    <Reference Include="UtfUnknown, Version=1.0.0.0, Culture=neutral, PublicKeyToken=90217ce7a23260d4, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\UTF.Unknown.1.0.0\lib\net40\UtfUnknown.dll</HintPath>
+    <Reference Include="UtfUnknown, Version=2.0.0.0, Culture=neutral, PublicKeyToken=90217ce7a23260d4, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\UTF.Unknown.2.0.0-rc1\lib\net40\UtfUnknown.dll</HintPath>
     </Reference>
     <Reference Include="WindowsBase" />
   </ItemGroup>
diff --git a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/packages.config b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/packages.config
index 0aa1b9b..d602006 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/packages.config
+++ b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="AvalonEdit" version="5.0.4" targetFramework="net462" />
-  <package id="UTF.Unknown" version="1.0.0" targetFramework="net462" />
+  <package id="UTF.Unknown" version="2.0.0-rc1" targetFramework="net462" />
 </packages>
\ No newline at end of file