No, scala 2.10 is not supported. Sangria started with 2.11 and now cross-compiled for 2.11 and 2.12. The version 2.10 is very old and I think it has a lot of outdated APIs, so it's possible that you would not be able to compile sangria for this version (I have a lot of concerns about macros API), even if you do it yourself. But I think you can give it a try if this is something that is important for your project, though I feel that updating to scala 2.12 would be a good investment as well.