diff --git a/oxford_usergroup_2019/4_dataloader/DataLoader.csproj b/oxford_usergroup_2019/4_dataloader/DataLoader.csproj
index 9c15e3e..62b1141 100644
--- a/oxford_usergroup_2019/4_dataloader/DataLoader.csproj
+++ b/oxford_usergroup_2019/4_dataloader/DataLoader.csproj
@@ -21,7 +21,7 @@
     <PackageReference Include="HotChocolate.Types.Filters" Version="10.1.1" />
     <PackageReference Include="HotChocolate.Types.Sorting" Version="10.1.1" />
     <PackageReference Include="HotChocolate.AspNetCore.Playground" Version="10.1.1" />
-    <PackageReference Include="MongoDB.Driver" Version="2.7.3" />
+    <PackageReference Include="MongoDB.Driver" Version="2.19.0" />
   </ItemGroup>  
 
 </Project>
\ No newline at end of file