diff --git a/CS/NetCore/SoftwareVersionNumbersCore/SoftwareVersionNumbersCore.csproj b/CS/NetCore/SoftwareVersionNumbersCore/SoftwareVersionNumbersCore.csproj
index 5380a29..ae96453 100644
--- a/CS/NetCore/SoftwareVersionNumbersCore/SoftwareVersionNumbersCore.csproj
+++ b/CS/NetCore/SoftwareVersionNumbersCore/SoftwareVersionNumbersCore.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="RestSharp" Version="106.11.3" />
   </ItemGroup>
 
diff --git a/CS/NetCore/WhatIsMyBrowser.CommonTypesCore/WhatIsMyBrowser.CommonTypesCore.csproj b/CS/NetCore/WhatIsMyBrowser.CommonTypesCore/WhatIsMyBrowser.CommonTypesCore.csproj
index 6f45bec..6a6d042 100644
--- a/CS/NetCore/WhatIsMyBrowser.CommonTypesCore/WhatIsMyBrowser.CommonTypesCore.csproj
+++ b/CS/NetCore/WhatIsMyBrowser.CommonTypesCore/WhatIsMyBrowser.CommonTypesCore.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
   <ItemGroup>