Invalid protocol connecting to dynamodb-local

[fracalo]

Hello,
trying to connect to dynamodb-local I get an error from aws-sdk
TypeError [ERR_INVALID_PROTOCOL]: Protocol "http:" not supported. Expected "https:".

Replicating the exact same query with the same version of the aws-sdk without serverless-offline it works flawlessly.

Debugging the executeSend command, in the aws-sdk, I see that the call done through serverless contains an agent configuration that contains the protocol set to https: (and this differs from the call that works).

How can I work around the issue?
I'm quite a noob with serverless so I might be missing something obvious :)