diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1152,6 +1152,7 @@ _Libraries for application-layer web security._
 
 _Libraries for programming with hardware._
 
+- [pyserial](https://github.com/pyserial/pyserial) - Python serial port access library for Windows, macOS, Linux, and BSD.
 - [pynput](https://github.com/moses-palmer/pynput) - A library to control and monitor input devices.
 - [bleak](https://github.com/hbldh/bleak) - A cross platform Bluetooth Low Energy Client for Python using asyncio.
 - [jumpstarter](https://github.com/jumpstarter-dev/jumpstarter) - A hardware-in-the-loop testing framework with a Python client library for automated testing on real and virtual hardware.