diff --git a/src/ACMESharp/ACMESharp.csproj b/src/ACMESharp/ACMESharp.csproj
index 5d0dd48..9ae30e9 100644
--- a/src/ACMESharp/ACMESharp.csproj
+++ b/src/ACMESharp/ACMESharp.csproj
@@ -28,7 +28,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Logging" Version="2.0.2" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="4.5.0" />
-    <PackageReference Include="Newtonsoft.json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.json" Version="13.0.1" />
   </ItemGroup>
 
 </Project>
diff --git a/src/examples/ACMECLI/ACMECLI.csproj b/src/examples/ACMECLI/ACMECLI.csproj
index f6d850a..1e1d33c 100644
--- a/src/examples/ACMECLI/ACMECLI.csproj
+++ b/src/examples/ACMECLI/ACMECLI.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.*" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.*" />
     <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="2.*" />
     <PackageReference Include="DnsClient" Version="1.*" />
   </ItemGroup>