diff --git a/bluetooth_bcm43xx/CHANGELOG.md b/bluetooth_bcm43xx/CHANGELOG.md
index 8e66aa4..f7f6696 100644
--- a/bluetooth_bcm43xx/CHANGELOG.md
+++ b/bluetooth_bcm43xx/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 2.2
+- Fix device-tree path for Supervisor 113
+
 ## 2.1
 - Support new way to read `serial-number` from device-tree
 
diff --git a/bluetooth_bcm43xx/config.json b/bluetooth_bcm43xx/config.json
index df9dc0a..816a6c5 100644
--- a/bluetooth_bcm43xx/config.json
+++ b/bluetooth_bcm43xx/config.json
@@ -1,6 +1,6 @@
 {
   "name": "Bluetooth BCM43xx",
-  "version": "2.1",
+  "version": "2.2",
   "slug": "bluetooth_bcm43xx",
   "description": "Activate Bluetooth for Broadcom 43xx chips",
   "url": "https://home-assistant.io/addons/bluetooth_bcm43xx/",
diff --git a/bluetooth_bcm43xx/run.sh b/bluetooth_bcm43xx/run.sh
index 944597b..1fa7d87 100644
--- a/bluetooth_bcm43xx/run.sh
+++ b/bluetooth_bcm43xx/run.sh
@@ -2,8 +2,8 @@
 set -e
 
 # Read serial number
-if [ -e /proc/device-tree/serial-number ]; then
-    SERIAL="$(cut -c9- /proc/device-tree/serial-number)"
+if [ -e /device-tree/serial-number ]; then
+    SERIAL="$(cut -c9- /device-tree/serial-number)"
 else
     SERIAL="$(grep Serial /proc/cpuinfo | cut -c19-)"
 fi