Cannot pass parent component's object as prop in Vue after Laravel Mix update

Hello I’m new to Vue and I’m using Vue on a standalone PHP Project with Laravel Mix.
I recently updated laravel mix in my project to the latest and immediately I was swarmed by Vue errors. I seem to struggle with this one especially. I have a component:

<template>
    <div>
        <ChildComponent :context="this"></ChildComponent>
    </div>
</template>
<script>
    import ChildComponent from './child-component';
    export default {
        components: { ChildComponent },
        ...
    }
</script>

This is the error I get: Error in render: "TypeError: Cannot read property 'context' of undefined" . Seems weird because in vue-devtools the parent component is present as an object in context prop of ChildComponent. I should probably also add that context is defined as context: {} in ChildComponent’s props.