diff --git a/singletonclient/ClientTestApp/packages.config b/singletonclient/ClientTestApp/packages.config
index 806c950f3..34d93fc06 100644
--- a/singletonclient/ClientTestApp/packages.config
+++ b/singletonclient/ClientTestApp/packages.config
@@ -1,8 +1,8 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.DotNet.PlatformAbstractions" version="2.0.4" targetFramework="net472" />
   <package id="Microsoft.Extensions.DependencyModel" version="2.0.4" targetFramework="net472" />
   <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net472" />
   <package id="System.ValueTuple" version="4.5.0" targetFramework="net472" />
-  <package id="YamlDotNet" version="8.1.2" targetFramework="net472" />
+  <package id="YamlDotNet" version="13.5.2" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/singletonclient/Product1ResLib/packages.config b/singletonclient/Product1ResLib/packages.config
index 52eba813d..e4f3f7d0b 100644
--- a/singletonclient/Product1ResLib/packages.config
+++ b/singletonclient/Product1ResLib/packages.config
@@ -1,8 +1,8 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="MosaicoSolutions.CSharpProperties" version="4.0.0" targetFramework="net472" />
   <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net472" />
   <package id="Newtonsoft.Json.Schema" version="3.0.10" targetFramework="net472" />
   <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.2" targetFramework="net472" />
-  <package id="YamlDotNet" version="8.1.2" targetFramework="net472" />
+  <package id="YamlDotNet" version="13.5.2" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/singletonclient/SingletonClient/SingletonClient.csproj b/singletonclient/SingletonClient/SingletonClient.csproj
index 6a26c7825..552ca80b0 100644
--- a/singletonclient/SingletonClient/SingletonClient.csproj
+++ b/singletonclient/SingletonClient/SingletonClient.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
@@ -13,7 +13,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="YamlDotNet" Version="8.1.2" />
+    <PackageReference Include="YamlDotNet" Version="13.5.2" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/singletonclient/UnitTestSingleton/packages.config b/singletonclient/UnitTestSingleton/packages.config
index 2c3c96bd9..848b08eb9 100644
--- a/singletonclient/UnitTestSingleton/packages.config
+++ b/singletonclient/UnitTestSingleton/packages.config
@@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="MicrosoftVisualStudioQualityToolsUnitTestFramework" version="1.0.0" targetFramework="net472" />
   <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net472" />
-  <package id="YamlDotNet" version="8.1.2" targetFramework="net472" />
+  <package id="YamlDotNet" version="13.5.2" targetFramework="net472" />
 </packages>
\ No newline at end of file