How to listen for ‘props’ changes

In the VueJs 2.0 docs I can’t find any hooks that would listen on props changes.

Does VueJs have such hooks like onPropsUpdated() or similar?

Update

As @wostex suggested, I tried to watch my property but nothing changed. Then I realized that I’ve got a special case:

<template>
    <child :my-prop="myProp"></child>
</template>

<script>
   export default {
      props: ['myProp']
   }
</script>

I am passing myProp that the parent component receives to the child component. Then the watch: {myProp: ...} is not working.