diff --git a/c-sharp/async-pattern/AsyncPattern/AsyncPattern/AsyncPattern.csproj b/c-sharp/async-pattern/AsyncPattern/AsyncPattern/AsyncPattern.csproj
index c2a470a..0ab1ee9 100644
--- a/c-sharp/async-pattern/AsyncPattern/AsyncPattern/AsyncPattern.csproj
+++ b/c-sharp/async-pattern/AsyncPattern/AsyncPattern/AsyncPattern.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
   <ItemGroup>
     <Compile Update="SeeIt.cs">