Sparkline does not update

Hi,

i am using latest React.

inside render():

<Sparkline data={this.state.sparklineData} />

and do update the state via 

this.setState({sparklineData:sparkData})

All components do update except Sparkline. I have tried many things like this.forceUpdate(). Also debugged the this.state.sparklineData inside render(). The setState does the work and re-renders and the data comes through. console.log(this.state.sparklineData) proves it.

But the component simply doesnot re-render.  I have put a default value into sparklineData which is:

this.state = {

    sparklineData: [1,0,1,0,0,1,1,0,1,0,0,1,1,0,1,0,0,1,1,0,1,0,0,1,1,0,1,0,0,1,1,0,1,0,0,1,1,0,1,0,0,1,1,0,1,0,0,1,1,0,1,0,0,1],

}

and this WILL be rendered. After that no updates. Please help