Marker not moving on map even after rerendering

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react-native

Hi! I am fetching coordinates from my database every 5 seconds, and my marker is dynamic,This is my render method

console.log('render'+this.state.driverLocation.latitude +' '+this.state.driverLocation.longitude);


    let marker = null;
    marker = <MapView.Marker title='This is you' coordinate={this.state.driverLocation } />;

 return (
      <View style={styles.container}>
        <MapView
          initialRegion={this.state.focusedLocation}
          region={!this.state.locationChosen ? this.state.focusedLocation : null}
          style={styles.map}
          onPress={this.pickLocationHandler}
          ref={ref => this.map = ref}
        >
          {marker}
     


        </MapView>

The log statement in render shows driverLocation changes every 5 sec as it should but the marker stays at the initial position (coordinates given while defining state).

Is there any problem with my code? Do I need to add something? Any help would be appreciated.

What I have tried:

All the values are being assigned correctly and component is rerendering everytime the state changes.