diff --git a/singletonclient/ClientTestApp/ClientTestApp.csproj b/singletonclient/ClientTestApp/ClientTestApp.csproj
index 8699fdc62..22458f2ca 100644
--- a/singletonclient/ClientTestApp/ClientTestApp.csproj
+++ b/singletonclient/ClientTestApp/ClientTestApp.csproj
@@ -84,8 +84,9 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
-    <Reference Include="YamlDotNet, Version=13.0.0.0, Culture=neutral, PublicKeyToken=ec19458f3c15af5e, processorArchitecture=MSIL">
-      <HintPath>..\packages\YamlDotNet.13.1.1\lib\net47\YamlDotNet.dll</HintPath>
+    <Reference Include="YamlDotNet, Version=15.0.0.0, Culture=neutral, PublicKeyToken=ec19458f3c15af5e">
+      <HintPath>..\packages\YamlDotNet.15.1.1\lib\net47\YamlDotNet.dll</HintPath>
+      <Private>True</Private>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/singletonclient/ClientTestApp/packages.config b/singletonclient/ClientTestApp/packages.config
index d35a46051..cbd148892 100644
--- a/singletonclient/ClientTestApp/packages.config
+++ b/singletonclient/ClientTestApp/packages.config
@@ -13,5 +13,5 @@
   <package id="System.Text.Json" version="7.0.3" targetFramework="net472" />
   <package id="System.Threading.Tasks.Extensions" version="4.5.4" targetFramework="net472" />
   <package id="System.ValueTuple" version="4.5.0" targetFramework="net472" />
-  <package id="YamlDotNet" version="13.1.1" targetFramework="net472" />
+  <package id="YamlDotNet" version="15.1.1" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/singletonclient/UnitTestSingleton/UnitTestSingleton.csproj b/singletonclient/UnitTestSingleton/UnitTestSingleton.csproj
index af4237d7b..207f103da 100644
--- a/singletonclient/UnitTestSingleton/UnitTestSingleton.csproj
+++ b/singletonclient/UnitTestSingleton/UnitTestSingleton.csproj
@@ -46,8 +46,9 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
-    <Reference Include="YamlDotNet, Version=13.0.0.0, Culture=neutral, PublicKeyToken=ec19458f3c15af5e, processorArchitecture=MSIL">
-      <HintPath>..\packages\YamlDotNet.13.1.1\lib\net47\YamlDotNet.dll</HintPath>
+    <Reference Include="YamlDotNet, Version=15.0.0.0, Culture=neutral, PublicKeyToken=ec19458f3c15af5e">
+      <HintPath>..\packages\YamlDotNet.15.1.1\lib\net47\YamlDotNet.dll</HintPath>
+      <Private>True</Private>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/singletonclient/UnitTestSingleton/packages.config b/singletonclient/UnitTestSingleton/packages.config
index 5d83112bc..f84598d9d 100644
--- a/singletonclient/UnitTestSingleton/packages.config
+++ b/singletonclient/UnitTestSingleton/packages.config
@@ -2,5 +2,5 @@
 <packages>
   <package id="MicrosoftVisualStudioQualityToolsUnitTestFramework" version="1.0.2" targetFramework="net472" />
   <package id="Newtonsoft.Json" version="13.0.3" targetFramework="net472" />
-  <package id="YamlDotNet" version="13.1.1" targetFramework="net472" />
+  <package id="YamlDotNet" version="15.1.1" targetFramework="net472" />
 </packages>
\ No newline at end of file