diff --git a/src/ACMESharp/ACMESharp.csproj b/src/ACMESharp/ACMESharp.csproj
index 5d0dd48..0b40a0b 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="13.0.2" />
   </ItemGroup>
 
 </Project>
diff --git a/src/examples/ACMEForms/packages.config b/src/examples/ACMEForms/packages.config
index c86565b..f7d1978 100644
--- a/src/examples/ACMEForms/packages.config
+++ b/src/examples/ACMEForms/packages.config
@@ -10,7 +10,7 @@
   <package id="Microsoft.Extensions.Logging.Abstractions" version="2.1.1" targetFramework="net461" />
   <package id="Microsoft.Extensions.Options" version="2.1.1" targetFramework="net461" />
   <package id="Microsoft.Extensions.Primitives" version="2.1.1" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="11.0.2" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net461" />
   <package id="Portable.BouncyCastle" version="1.8.2" targetFramework="net461" />
   <package id="System.Buffers" version="4.4.0" targetFramework="net461" />
   <package id="System.ComponentModel.Annotations" version="4.5.0" targetFramework="net461" />