Apple today released AirPods software 3.7.2, bringing unspecified improvements and bug fixes to the company’s first Bluetooth earbuds featuring the in-house designed W1 wireless chip.

According to the German-language publication Macerkopf.de (Google Translate), which first spotted the new firmware, it’s possible that it addresses the reported Bluetooth connectivity issues where AirPods would lost connection with their paired iPhone during phone calls.

To install the new AirPods firmware, put both earbuds inside their charging case, then close the case and connect it to a charger or a USB port on your computer. Your iPhone must be paired with your AirPods and connected to Wi-Fi in order for the firmware to download and install.

TUTORIAL: How to install software updates for your AirPods

Keep the charging case within a few inches of your iPhone or the AirPods firmware won’t be updated. Keep in mind that updating your AirPods may take a few minutes to complete.

During the update process, your AirPods may be unavailable for use.

You can find out your AirPods firmware version in Settings → General → About → AirPods on your iPhone when the earbuds are connected to the phone.

AirPods originally released with firmware version 3.3.1.