diff --git a/IntegrationTests/IntegrationTests.csproj b/IntegrationTests/IntegrationTests.csproj
index 47b9de0..65d3b75 100644
--- a/IntegrationTests/IntegrationTests.csproj
+++ b/IntegrationTests/IntegrationTests.csproj
@@ -30,35 +30,22 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="DnsClient, Version=1.0.7.0, Culture=neutral, PublicKeyToken=4574bb5573c51424, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.3.6\lib\net45\DnsClient.dll</HintPath>
+    <Reference Include="MongoDB.Bson, Version=2.7.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\MongoDB.Bson.2.7.0\lib\net45\MongoDB.Bson.dll</HintPath>
     </Reference>
-    <Reference Include="MongoDB.Bson, Version=2.5.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.3.6\lib\net45\MongoDB.Bson.dll</HintPath>
+    <Reference Include="MongoDB.Driver, Version=2.7.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\MongoDB.Driver.2.7.0\lib\net45\MongoDB.Driver.dll</HintPath>
     </Reference>
-    <Reference Include="MongoDB.Driver, Version=2.5.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.3.6\lib\net45\MongoDB.Driver.dll</HintPath>
-    </Reference>
-    <Reference Include="MongoDB.Driver.Core, Version=2.5.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.3.6\lib\net45\MongoDB.Driver.Core.dll</HintPath>
-    </Reference>
-    <Reference Include="MongoDbGenericRepository, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.3.6\lib\net45\MongoDbGenericRepository.dll</HintPath>
+    <Reference Include="MongoDB.Driver.Core, Version=2.7.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\MongoDB.Driver.Core.2.7.0\lib\net45\MongoDB.Driver.Core.dll</HintPath>
     </Reference>
     <Reference Include="nunit.framework, Version=3.9.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
       <HintPath>..\packages\NUnit.3.9.0\lib\net45\nunit.framework.dll</HintPath>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Buffers, Version=4.0.1.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.3.6\lib\net45\System.Buffers.dll</HintPath>
-    </Reference>
     <Reference Include="System.Configuration" />
     <Reference Include="System.Core" />
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="System.Runtime.InteropServices.RuntimeInformation, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.3.6\lib\net45\System.Runtime.InteropServices.RuntimeInformation.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="CRUDObjectIdTests.cs" />
@@ -87,5 +74,11 @@
   <ItemGroup>
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\MongoDbGenericRepository\MongoDbGenericRepository.csproj">
+      <Project>{efc776c4-2af3-440c-be80-3fbe335817a5}</Project>
+      <Name>MongoDbGenericRepository</Name>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>
\ No newline at end of file
diff --git a/IntegrationTests/packages.config b/IntegrationTests/packages.config
index 3891bf8..af7ff01 100644
--- a/IntegrationTests/packages.config
+++ b/IntegrationTests/packages.config
@@ -1,10 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="DnsClient" version="1.0.7" targetFramework="net461" />
-  <package id="MongoDB.Bson" version="2.5.0" targetFramework="net461" />
-  <package id="MongoDB.Driver" version="2.5.0" targetFramework="net461" />
-  <package id="MongoDB.Driver.Core" version="2.5.0" targetFramework="net461" />
-  <package id="MongoDbGenericRepository" version="1.3.6" targetFramework="net461" />
+  <package id="MongoDB.Bson" version="2.7.0" targetFramework="net461" />
+  <package id="MongoDB.Driver" version="2.7.0" targetFramework="net461" />
+  <package id="MongoDB.Driver.Core" version="2.7.0" targetFramework="net461" />
   <package id="NUnit" version="3.9.0" targetFramework="net461" />
   <package id="NUnit.ConsoleRunner" version="3.7.0" targetFramework="net461" />
   <package id="System.Buffers" version="4.3.0" targetFramework="net461" />
diff --git a/MongoDbGenericRepository/BaseMongoDbRepository.cs b/MongoDbGenericRepository/BaseMongoDbRepository.cs
index d6dc091..39cec90 100644
--- a/MongoDbGenericRepository/BaseMongoDbRepository.cs
+++ b/MongoDbGenericRepository/BaseMongoDbRepository.cs
@@ -183,7 +183,18 @@ namespace MongoDbGenericRepository
             {
                 FormatDocument<TDocument, TKey>(document);
             }
-            HandlePartitioned<TDocument, TKey>(documents.FirstOrDefault()).InsertMany(documents.ToList());
+            // cannot use typeof(IPartitionedDocument).IsAssignableFrom(typeof(TDocument)), not available in netstandard 1.5
+            if (documents.Any(e => e is IPartitionedDocument))
+            {
+                foreach (var group in documents.GroupBy(e => ((IPartitionedDocument)e).PartitionKey))
+                {
+                    HandlePartitioned<TDocument, TKey>(group.FirstOrDefault()).InsertMany(group.ToList());
+                }
+            }
+            else
+            {
+                GetCollection<TDocument, TKey>().InsertMany(documents.ToList());
+            }
         }