diff --git a/README.md b/README.md
index da742d1..fad1f82 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ This project requires a C++14 compiler, cmake, libevdev, libudev, and libconfig.
 
 **Debian/Ubuntu:** `sudo apt install cmake libevdev-dev libudev-dev libconfig++-dev`
 
-**Arch Linux:** `sudo pacman -S cmake libevdev libconfig libudev`
+**Arch Linux:** `sudo pacman -S cmake libevdev libconfig pkgconf`
 
 ## Building
 
diff --git a/TESTED.md b/TESTED.md
index e92ff94..e92c28b 100644
--- a/TESTED.md
+++ b/TESTED.md
@@ -10,4 +10,5 @@ This is not by any means an exhaustive list. Many more devices are supported but
 | MX Vertical  |     Yes     |
 |   MX Ergo    |     Yes     |
 |     M720     |     Yes     |
+|     M590     |     Yes     |
 |     T400     |     Yes     |