I can't download the version 4.15 of UE4

Epic Games Launcher is not showing the version 4.15 of unreal engine 4, please how can I download the update?
My system:
O.S: windows 10 64bit,
CPU: Intel core i7 - 2630QM 2GHz,
GPU: nvidia geforce GT 540M 2GB

Go to your epic games launcher. In there go to the library tab and under engines it will give you the option to install.

Thank you for responding, I have found it.