diff --git a/src/Squidex.Infrastructure.MongoDb/MongoDb/BsonJsonSerializer.cs b/src/Squidex.Infrastructure.MongoDb/MongoDb/BsonJsonSerializer.cs
index f19987464..611ece5aa 100644
--- a/src/Squidex.Infrastructure.MongoDb/MongoDb/BsonJsonSerializer.cs
+++ b/src/Squidex.Infrastructure.MongoDb/MongoDb/BsonJsonSerializer.cs
@@ -6,11 +6,9 @@
 //  All rights reserved.
 // ==========================================================================
 
-using MongoDB.Bson;
 using MongoDB.Bson.Serialization;
 using MongoDB.Bson.Serialization.Serializers;
 using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
 
 namespace Squidex.Infrastructure.MongoDb
 {