diff --git a/ChordInstaller/app.config b/ChordInstaller/app.config
index 4a0d23ea..2aab1743 100644
--- a/ChordInstaller/app.config
+++ b/ChordInstaller/app.config
@@ -5,7 +5,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/DigitalPlatform.MessageClient/DigitalPlatform.MessageClient.csproj b/DigitalPlatform.MessageClient/DigitalPlatform.MessageClient.csproj
index 35e596df..afa1fe5f 100644
--- a/DigitalPlatform.MessageClient/DigitalPlatform.MessageClient.csproj
+++ b/DigitalPlatform.MessageClient/DigitalPlatform.MessageClient.csproj
@@ -50,8 +50,8 @@
     <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop, Version=1.0.168.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
       <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="Nito.AsyncEx.Context, Version=5.1.0.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\Nito.AsyncEx.Context.5.1.0\lib\netstandard2.0\Nito.AsyncEx.Context.dll</HintPath>
diff --git a/DigitalPlatform.MessageClient/app.config b/DigitalPlatform.MessageClient/app.config
index 11476aed..055dca2a 100644
--- a/DigitalPlatform.MessageClient/app.config
+++ b/DigitalPlatform.MessageClient/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/DigitalPlatform.MessageClient/packages.config b/DigitalPlatform.MessageClient/packages.config
index 5b9b9881..ba8b72f2 100644
--- a/DigitalPlatform.MessageClient/packages.config
+++ b/DigitalPlatform.MessageClient/packages.config
@@ -4,7 +4,7 @@
   <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net461" />
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net461" />
   <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="Nito.AsyncEx" version="5.1.0" targetFramework="net461" />
   <package id="Nito.AsyncEx.Context" version="5.1.0" targetFramework="net461" />
   <package id="Nito.AsyncEx.Coordination" version="5.1.0" targetFramework="net461" />
diff --git a/DigitalPlatform.MessageServer/DigitalPlatform.MessageServer.csproj b/DigitalPlatform.MessageServer/DigitalPlatform.MessageServer.csproj
index d9a6b06d..4ea9a3c1 100644
--- a/DigitalPlatform.MessageServer/DigitalPlatform.MessageServer.csproj
+++ b/DigitalPlatform.MessageServer/DigitalPlatform.MessageServer.csproj
@@ -74,8 +74,8 @@
     <Reference Include="MongoDB.Libmongocrypt, Version=1.2.1.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\MongoDB.Libmongocrypt.1.2.1\lib\net452\MongoDB.Libmongocrypt.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="Owin, Version=1.0.0.0, Culture=neutral, PublicKeyToken=f0ebd12fd5e55cc5, processorArchitecture=MSIL">
       <HintPath>..\packages\Owin.1.0\lib\net40\Owin.dll</HintPath>
diff --git a/DigitalPlatform.MessageServer/app.config b/DigitalPlatform.MessageServer/app.config
index 5af7cafa..86983ee9 100644
--- a/DigitalPlatform.MessageServer/app.config
+++ b/DigitalPlatform.MessageServer/app.config
@@ -16,7 +16,7 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="DnsClient" publicKeyToken="4574bb5573c51424" culture="neutral" />
diff --git a/DigitalPlatform.MessageServer/packages.config b/DigitalPlatform.MessageServer/packages.config
index 2664f63a..f800bba0 100644
--- a/DigitalPlatform.MessageServer/packages.config
+++ b/DigitalPlatform.MessageServer/packages.config
@@ -14,7 +14,7 @@
   <package id="MongoDB.Driver" version="2.12.4" targetFramework="net472" />
   <package id="MongoDB.Driver.Core" version="2.12.4" targetFramework="net472" />
   <package id="MongoDB.Libmongocrypt" version="1.2.1" targetFramework="net472" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net472" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="Owin" version="1.0" targetFramework="net45" />
   <package id="SharpCompress" version="0.29.0" targetFramework="net472" />
   <package id="System.Buffers" version="4.5.1" targetFramework="net472" />
diff --git a/DigitalPlatform.Z3950.Server/DigitalPlatform.Z3950.Server.csproj b/DigitalPlatform.Z3950.Server/DigitalPlatform.Z3950.Server.csproj
index 64516d3b..be2b6cc8 100644
--- a/DigitalPlatform.Z3950.Server/DigitalPlatform.Z3950.Server.csproj
+++ b/DigitalPlatform.Z3950.Server/DigitalPlatform.Z3950.Server.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="log4net" Version="2.0.12" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.Buffers" Version="4.5.1" />
   </ItemGroup>
 
diff --git a/MessageWeb/MessageWeb.csproj b/MessageWeb/MessageWeb.csproj
index 352b88e2..b2a007a9 100644
--- a/MessageWeb/MessageWeb.csproj
+++ b/MessageWeb/MessageWeb.csproj
@@ -59,8 +59,8 @@
     <Reference Include="Microsoft.Owin.Security, Version=4.1.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <HintPath>..\packages\Microsoft.Owin.Security.4.1.1\lib\net45\Microsoft.Owin.Security.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="Owin, Version=1.0.0.0, Culture=neutral, PublicKeyToken=f0ebd12fd5e55cc5, processorArchitecture=MSIL">
       <HintPath>..\packages\Owin.1.0\lib\net40\Owin.dll</HintPath>
diff --git a/MessageWeb/Web.config b/MessageWeb/Web.config
index 1ebe39e8..34f8ddcc 100644
--- a/MessageWeb/Web.config
+++ b/MessageWeb/Web.config
@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="utf-8"?>
 <!--
   有关如何配置 ASP.NET 应用程序的详细信息，请访问
   http://go.microsoft.com/fwlink/?LinkId=169433
@@ -13,26 +13,26 @@
       </system.Web>
   -->
   <system.web>
-    <compilation debug="true" targetFramework="4.7.2"/>
-    <pages controlRenderingCompatibilityVersion="4.0"/>
+    <compilation debug="true" targetFramework="4.7.2" />
+    <pages controlRenderingCompatibilityVersion="4.0" />
   </system.web>
   <runtime>
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
-        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral"/>
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0"/>
+        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="Microsoft.AspNet.SignalR.Core" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
-        <bindingRedirect oldVersion="0.0.0.0-2.2.1.0" newVersion="2.2.1.0"/>
+        <assemblyIdentity name="Microsoft.AspNet.SignalR.Core" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-2.2.1.0" newVersion="2.2.1.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
-        <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.1.1.0"/>
+        <assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.1.1.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
-        <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.1.1.0"/>
+        <assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.1.1.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/MessageWeb/packages.config b/MessageWeb/packages.config
index 30cb3899..17871b6f 100644
--- a/MessageWeb/packages.config
+++ b/MessageWeb/packages.config
@@ -8,6 +8,6 @@
   <package id="Microsoft.Owin" version="4.1.1" targetFramework="net461" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="4.1.1" targetFramework="net461" />
   <package id="Microsoft.Owin.Security" version="4.1.1" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="Owin" version="1.0" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/TestClient1/TestClient1.csproj b/TestClient1/TestClient1.csproj
index afddc6c7..97dc679d 100644
--- a/TestClient1/TestClient1.csproj
+++ b/TestClient1/TestClient1.csproj
@@ -41,8 +41,8 @@
     <Reference Include="CommonMark, Version=0.1.0.0, Culture=neutral, PublicKeyToken=001ef8810438905d, processorArchitecture=MSIL">
       <HintPath>..\packages\CommonMark.NET.0.15.1\lib\net45\CommonMark.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
diff --git a/TestClient1/app.config b/TestClient1/app.config
index 80f322df..6335a7ed 100644
--- a/TestClient1/app.config
+++ b/TestClient1/app.config
@@ -176,7 +176,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/TestClient1/packages.config b/TestClient1/packages.config
index 913317d3..cf2b4c2c 100644
--- a/TestClient1/packages.config
+++ b/TestClient1/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="CommonMark.NET" version="0.15.1" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/TestRouter/app.config b/TestRouter/app.config
index 7e835f1c..f40e1854 100644
--- a/TestRouter/app.config
+++ b/TestRouter/app.config
@@ -32,7 +32,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/dp2Capo.Install/app.config b/dp2Capo.Install/app.config
index 11476aed..055dca2a 100644
--- a/dp2Capo.Install/app.config
+++ b/dp2Capo.Install/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/dp2Capo.Install/dp2Capo.Install.csproj b/dp2Capo.Install/dp2Capo.Install.csproj
index ae9c63ab..3b767505 100644
--- a/dp2Capo.Install/dp2Capo.Install.csproj
+++ b/dp2Capo.Install/dp2Capo.Install.csproj
@@ -36,8 +36,8 @@
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
diff --git a/dp2Capo.Install/packages.config b/dp2Capo.Install/packages.config
index 8ab13a90..5eaa239b 100644
--- a/dp2Capo.Install/packages.config
+++ b/dp2Capo.Install/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/dp2Capo/app.config b/dp2Capo/app.config
index 03225e66..4d8cb76d 100644
--- a/dp2Capo/app.config
+++ b/dp2Capo/app.config
@@ -20,7 +20,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Buffers" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
diff --git a/dp2Capo/dp2Capo.csproj b/dp2Capo/dp2Capo.csproj
index 7bec7c01..8dbbf3f8 100644
--- a/dp2Capo/dp2Capo.csproj
+++ b/dp2Capo/dp2Capo.csproj
@@ -44,8 +44,8 @@
     <Reference Include="Microsoft.AspNet.SignalR.Client, Version=2.4.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <HintPath>..\packages\Microsoft.AspNet.SignalR.Client.2.4.1\lib\net45\Microsoft.AspNet.SignalR.Client.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Buffers, Version=4.0.3.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
diff --git a/dp2Capo/packages.config b/dp2Capo/packages.config
index 6ba3aa43..f7662c37 100644
--- a/dp2Capo/packages.config
+++ b/dp2Capo/packages.config
@@ -2,6 +2,6 @@
 <packages>
   <package id="log4net" version="2.0.12" targetFramework="net461" />
   <package id="Microsoft.AspNet.SignalR.Client" version="2.4.1" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="System.Buffers" version="4.5.1" targetFramework="net461" />
 </packages>
\ No newline at end of file
diff --git a/dp2Router.Install/app.config b/dp2Router.Install/app.config
index 11476aed..055dca2a 100644
--- a/dp2Router.Install/app.config
+++ b/dp2Router.Install/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/dp2Router/app.config b/dp2Router/app.config
index 4a0d23ea..2aab1743 100644
--- a/dp2Router/app.config
+++ b/dp2Router/app.config
@@ -5,7 +5,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/dp2weixin.service/app.config b/dp2weixin.service/app.config
index 6beacf1f..31a27abe 100644
--- a/dp2weixin.service/app.config
+++ b/dp2weixin.service/app.config
@@ -16,7 +16,7 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Runtime.InteropServices.RuntimeInformation" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/dp2weixin.service/dp2weixin.service.csproj b/dp2weixin.service/dp2weixin.service.csproj
index 75c75565..56418f52 100644
--- a/dp2weixin.service/dp2weixin.service.csproj
+++ b/dp2weixin.service/dp2weixin.service.csproj
@@ -61,8 +61,8 @@
     <Reference Include="MongoDB.LibMongocrypt, Version=1.2.0.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\MongoDB.LibMongocrypt.1.2.0\lib\net452\MongoDB.LibMongocrypt.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="Senparc.CO2NET, Version=1.3.200.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\Senparc.CO2NET.1.3.200\lib\net45\Senparc.CO2NET.dll</HintPath>
diff --git a/dp2weixin.service/packages.config b/dp2weixin.service/packages.config
index 968770ed..b8476e80 100644
--- a/dp2weixin.service/packages.config
+++ b/dp2weixin.service/packages.config
@@ -11,7 +11,7 @@
   <package id="MongoDB.Driver" version="2.12.0" targetFramework="net461" />
   <package id="MongoDB.Driver.Core" version="2.12.0" targetFramework="net461" />
   <package id="MongoDB.LibMongocrypt" version="1.2.0" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="Senparc.CO2NET" version="1.3.200" targetFramework="net461" />
   <package id="Senparc.CO2NET.APM" version="0.9.200" targetFramework="net461" />
   <package id="Senparc.NeuChar" version="1.3.200" targetFramework="net461" />
diff --git a/dp2weixinP2P/Web.config b/dp2weixinP2P/Web.config
index 8502b3df..5c15e5da 100644
--- a/dp2weixinP2P/Web.config
+++ b/dp2weixinP2P/Web.config
@@ -277,7 +277,7 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" culture="neutral" />
diff --git a/dp2weixinP2P/dp2weixinWeb.csproj b/dp2weixinP2P/dp2weixinWeb.csproj
index 65ff7d9c..84033e20 100644
--- a/dp2weixinP2P/dp2weixinWeb.csproj
+++ b/dp2weixinP2P/dp2weixinWeb.csproj
@@ -53,8 +53,8 @@
       <Private>True</Private>
       <HintPath>..\packages\Microsoft.Web.Infrastructure.1.0.0.0\lib\net40\Microsoft.Web.Infrastructure.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="Senparc.CO2NET, Version=1.3.200.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\Senparc.CO2NET.1.3.200\lib\net45\Senparc.CO2NET.dll</HintPath>
diff --git a/dp2weixinP2P/packages.config b/dp2weixinP2P/packages.config
index 15ac152d..d7af6ae6 100644
--- a/dp2weixinP2P/packages.config
+++ b/dp2weixinP2P/packages.config
@@ -23,7 +23,7 @@
   <package id="Microsoft.NETCore.Platforms" version="1.1.0" targetFramework="net472" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
   <package id="NETStandard.Library" version="2.0.3" targetFramework="net472" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="Senparc.CO2NET" version="1.3.200" targetFramework="net461" />
   <package id="Senparc.CO2NET.APM" version="0.9.200" targetFramework="net461" />
   <package id="Senparc.NeuChar" version="1.3.200" targetFramework="net461" />
diff --git a/ilovelibrary/Web.config b/ilovelibrary/Web.config
index 989c412e..0590d20d 100644
--- a/ilovelibrary/Web.config
+++ b/ilovelibrary/Web.config
@@ -1,18 +1,18 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="utf-8"?>
 <!--
   有关如何配置 ASP.NET 应用程序的详细信息，请访问
   http://go.microsoft.com/fwlink/?LinkId=152368
   -->
 <configuration>
   <appSettings>
-    <add key="PreserveLoginUrl" value="true"/>
-    <add key="ClientValidationEnabled" value="true"/>
-    <add key="UnobtrusiveJavaScriptEnabled" value="true"/>
+    <add key="PreserveLoginUrl" value="true" />
+    <add key="ClientValidationEnabled" value="true" />
+    <add key="UnobtrusiveJavaScriptEnabled" value="true" />
     <!-- dp2library地址与账号 -->
-    <add key="dp2LibraryUrl" value="http://localhost/dp2library/rest/t1/"/>
+    <add key="dp2LibraryUrl" value="http://localhost/dp2library/rest/t1/" />
     <!--//localhost/dp2library/xe/rest" />-->
-    <add key="ilovelibraryDataDir" value="c:\\ilovelibrary_data"/>
-    <add key="dp2OpacUrl" value="http://localhost/dp2OPAC"/>
+    <add key="ilovelibraryDataDir" value="c:\\ilovelibrary_data" />
+    <add key="dp2OpacUrl" value="http://localhost/dp2OPAC" />
   </appSettings>
   <!--
     有关 web.config 更改的说明，请参见 http://go.microsoft.com/fwlink/?LinkId=235367。
@@ -23,59 +23,59 @@
       </system.Web>
   -->
   <system.web>
-    <customErrors mode="Off"/>
-    <httpRuntime/>
-    <compilation debug="true" targetFramework="4.7.2"/>
+    <customErrors mode="Off" />
+    <httpRuntime />
+    <compilation debug="true" targetFramework="4.7.2" />
     <authentication mode="Forms">
-      <forms loginUrl="~/Account/Login" timeout="2880"/>
+      <forms loginUrl="~/Account/Login" timeout="2880" />
     </authentication>
     <pages controlRenderingCompatibilityVersion="4.0">
       <namespaces>
-        <add namespace="System.Web.Helpers"/>
-        <add namespace="System.Web.Mvc"/>
-        <add namespace="System.Web.Mvc.Ajax"/>
-        <add namespace="System.Web.Mvc.Html"/>
-        <add namespace="System.Web.Optimization"/>
-        <add namespace="System.Web.Routing"/>
-        <add namespace="System.Web.WebPages"/>
+        <add namespace="System.Web.Helpers" />
+        <add namespace="System.Web.Mvc" />
+        <add namespace="System.Web.Mvc.Ajax" />
+        <add namespace="System.Web.Mvc.Html" />
+        <add namespace="System.Web.Optimization" />
+        <add namespace="System.Web.Routing" />
+        <add namespace="System.Web.WebPages" />
       </namespaces>
     </pages>
   </system.web>
   <system.webServer>
-    <validation validateIntegratedModeConfiguration="false"/>
-    <staticContent/>
+    <validation validateIntegratedModeConfiguration="false" />
+    <staticContent />
     <handlers>
-      <remove name="ExtensionlessUrlHandler-Integrated-4.0"/>
-      <remove name="OPTIONSVerbHandler"/>
-      <remove name="TRACEVerbHandler"/>
-      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0"/>
+      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
+      <remove name="OPTIONSVerbHandler" />
+      <remove name="TRACEVerbHandler" />
+      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
     </handlers>
   </system.webServer>
   <runtime>
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
-        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35"/>
-        <bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930"/>
+        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral"/>
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0"/>
+        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" culture="neutral"/>
-        <bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2"/>
+        <assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35"/>
-        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
+        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35"/>
-        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
+        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35"/>
-        <bindingRedirect oldVersion="1.0.0.0-5.2.7.0" newVersion="5.2.7.0"/>
+        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-5.2.7.0" newVersion="5.2.7.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/ilovelibrary/ilovelibrary.csproj b/ilovelibrary/ilovelibrary.csproj
index f6f4d319..72f70337 100644
--- a/ilovelibrary/ilovelibrary.csproj
+++ b/ilovelibrary/ilovelibrary.csproj
@@ -55,8 +55,8 @@
       <Private>True</Private>
       <HintPath>..\packages\Microsoft.Web.Infrastructure.1.0.0.0\lib\net40\Microsoft.Web.Infrastructure.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Data" />
diff --git a/ilovelibrary/packages.config b/ilovelibrary/packages.config
index 93e64745..fbeb026d 100644
--- a/ilovelibrary/packages.config
+++ b/ilovelibrary/packages.config
@@ -21,7 +21,7 @@
   <package id="Microsoft.Net.Http.zh-Hans" version="2.0.20710.0" targetFramework="net45" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
   <package id="Modernizr" version="2.8.3" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="popper.js" version="1.16.1" targetFramework="net461" />
   <package id="WebGrease" version="1.6.0" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/testSearch/App.config b/testSearch/App.config
index 0d43e060..84cbe039 100644
--- a/testSearch/App.config
+++ b/testSearch/App.config
@@ -7,7 +7,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />