{

"ResourceTypes": {
    "AWS::EC2::NetworkAclEntry": {
        "patch": {
            "description": "https://github.com/aws/aws-cdk/issues/1517",
            "operations": [
                {
                    "op": "add",
                    "path": "/Properties/CidrBlock/Required",
                    "value": false
                }
            ]
        }
    }
}

}