diff --git a/Hangfire.AzureDocumentDB/DocumentDbStorage.cs b/Hangfire.AzureDocumentDB/DocumentDbStorage.cs
index 0cac1d0..54a352d 100644
--- a/Hangfire.AzureDocumentDB/DocumentDbStorage.cs
+++ b/Hangfire.AzureDocumentDB/DocumentDbStorage.cs
@@ -10,11 +10,12 @@
 using Hangfire.Logging;
 using Newtonsoft.Json;
 using Microsoft.Azure.Documents;
-using Newtonsoft.Json.Serialization;
 using Microsoft.Azure.Documents.Client;
 
 using Hangfire.Azure.Queue;
 using Hangfire.Azure.Helper;
+using Hangfire.Azure.Documents.Json;
+
 
 namespace Hangfire.Azure
 {
@@ -50,10 +51,7 @@ public DocumentDbStorage(string url, string authSecret, string database, string
             {
                 NullValueHandling = NullValueHandling.Ignore,
                 DateTimeZoneHandling = DateTimeZoneHandling.Utc,
-                ContractResolver = new CamelCasePropertyNamesContractResolver
-                {
-                    NamingStrategy = new CamelCaseNamingStrategy(false, false)
-                }
+                ContractResolver = new DocumentContractResolver()
             };
 
             ConnectionPolicy connectionPolicy = ConnectionPolicy.Default;
diff --git a/Hangfire.AzureDocumentDB/Hangfire.AzureDocumentDB.csproj b/Hangfire.AzureDocumentDB/Hangfire.AzureDocumentDB.csproj
index 6d8e3db..0325608 100644
--- a/Hangfire.AzureDocumentDB/Hangfire.AzureDocumentDB.csproj
+++ b/Hangfire.AzureDocumentDB/Hangfire.AzureDocumentDB.csproj
@@ -62,15 +62,15 @@
 		</None>
 	</ItemGroup>
 	<ItemGroup>
-		<PackageReference Include="Hangfire.Core" Version="1.7.3" />
+		<PackageReference Include="Hangfire.Core" Version="1.7.7" />
 		<PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
 		<PackageReference Include="System.ValueTuple" Version="4.5.0" />
 	</ItemGroup>
 	<ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
-		<PackageReference Include="Microsoft.Azure.DocumentDB.Core" Version="2.4.0" />
+		<PackageReference Include="Microsoft.Azure.DocumentDB.Core" Version="2.9.0" />
 	</ItemGroup>
 	<ItemGroup Condition="'$(TargetFramework)' == 'net461'">
-		<PackageReference Include="Microsoft.Azure.DocumentDB" Version="2.4.0" />
+		<PackageReference Include="Microsoft.Azure.DocumentDB" Version="2.9.0" />
 	</ItemGroup>
 	<ItemGroup>
 		<Folder Include="Properties\" />
diff --git a/Hangfire.AzureDocumentDB/Json/DocumentContractResolver.cs b/Hangfire.AzureDocumentDB/Json/DocumentContractResolver.cs
new file mode 100644
index 0000000..9af4ac7
--- /dev/null
+++ b/Hangfire.AzureDocumentDB/Json/DocumentContractResolver.cs
@@ -0,0 +1,76 @@
+using System;
+
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using Newtonsoft.Json.Serialization;
+
+using Hangfire.Azure.Documents;
+
+namespace Hangfire.Azure.Documents.Json
+{
+    internal class DocumentContractResolver : CamelCasePropertyNamesContractResolver
+    {
+        public DocumentContractResolver()
+        {
+            NamingStrategy = new CamelCaseNamingStrategy(false, false);
+        }
+
+        protected override JsonContract CreateContract(Type objectType)
+        {
+            JsonContract contract = base.CreateContract(objectType);
+            if (objectType != typeof(DocumentBase)) return contract;
+            contract.Converter = new DocumentConverter();
+            return contract;
+        }
+    }
+
+    internal class DocumentConverter : JsonConverter
+    {
+        public override bool CanWrite => false;
+        public override bool CanRead => true;
+        public override bool CanConvert(Type objectType) => objectType == typeof(DocumentBase);
+
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) => throw new InvalidOperationException("Use default serialization.");
+
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            JObject jsonObject = JObject.Load(reader);
+            DocumentBase document;
+
+            switch (jsonObject["type"].Value<int>())
+            {
+                case (int)DocumentTypes.Counter:
+                    document = new Counter();
+                    break;
+                case (int)DocumentTypes.Hash:
+                    document = new Hash();
+                    break;
+                case (int)DocumentTypes.Job:
+                    document = new Job();
+                    break;
+                case (int)DocumentTypes.List:
+                    document = new List();
+                    break;
+                case (int)DocumentTypes.Lock:
+                    document = new Lock();
+                    break;
+                case (int)DocumentTypes.Queue:
+                    document = new Queue();
+                    break;
+                case (int)DocumentTypes.Server:
+                    document = new Server();
+                    break;
+                case (int)DocumentTypes.Set:
+                    document = new Set();
+                    break;
+                case (int)DocumentTypes.State:
+                    document = new State();
+                    break;
+                default: throw new ArgumentOutOfRangeException();
+            }
+
+            serializer.Populate(jsonObject.CreateReader(), document);
+            return document;
+        }
+    }
+}
\ No newline at end of file