diff --git a/createsend-dotnet/createsend-dotnet.standard20.csproj b/createsend-dotnet/createsend-dotnet.standard20.csproj
index 4f6f93a..e84c3c8 100644
--- a/createsend-dotnet/createsend-dotnet.standard20.csproj
+++ b/createsend-dotnet/createsend-dotnet.standard20.csproj
@@ -45,7 +45,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="4.5.0" />
   </ItemGroup>
 
diff --git a/createsend-dotnet/packages.config b/createsend-dotnet/packages.config
index d2a4380..8928541 100644
--- a/createsend-dotnet/packages.config
+++ b/createsend-dotnet/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="6.0.1" targetFramework="net4" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net4" />
 </packages>
\ No newline at end of file