serverless-application-model: Property PublicAccessBlockConfiguration not defined

I’m using the very new AWS::S3::Bucket property PublicAccessBlockConfiguration

I also have the latest AWS SDK and aws-cli version: aws-cli/1.16.60 Python/3.7.1 Darwin/16.7.0 botocore/1.12.50

My template looks like:

AWSTemplateFormatVersion: 2010-09-09
Transform: AWS::Serverless-2016-10-31

Resources:
  Bucket:
    Type: AWS::S3::Bucket
    Properties:
      PublicAccessBlockConfiguration:
        BlockPublicAcls       : true
        BlockPublicPolicy     : true
        IgnorePublicAcls      : true
        RestrictPublicBuckets : true

And I’m having the following error:

Failed to create the changeset:
Waiter ChangeSetCreateComplete failed:
Waiter encountered a terminal failure state Status: FAILED.
Reason: Transform AWS::Serverless-2016-10-31 failed with:
 Invalid Serverless Application Specification document.
 Number of errors found: 1.
 Resource with id [Bucket] is invalid.
 property PublicAccessBlockConfiguration not defined for resource of type AWS::S3::Bucket

This looks like an AWS::Serverless-2016-10-31 transform error? Or am I wrong? 🤔

Edit: I’ve updated many buckets with PublicAccessBlockConfigurationand everything looks fine except when the CloudFormation template uses Transform: AWS::Serverless-2016-10-31 and the S3 is a CloudFormation dependency 🤔

Note also than I’m doing aws cloudformation package prior to aws cloudformation deploy