diff --git a/README.md b/README.md
index 8138d6d..146c5b7 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ service over BLE.
 
 ### Software
 
-- Linux
+- Linux: tested on Debian 13. 
 - BlueZ 5.50+ (for Bluetooth management)
 - D-Bus (for BlueZ communication)
 - `hciconfig` (usually part of the `bluez-utils` or `bluez-tools` package)