diff --git a/.travis.yml b/.travis.yml
index 0e871cb..7020c1c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,12 +2,10 @@ language: python
 matrix:
   fast_finish: true
   include:
-    - python: "3.6"
+    - python: "3.7"
       env: TOXENV=lint
-    - python: "3.6"
+    - python: "3.7"
       env: TOXENV=black
-    - python: "3.6"
-      env: TOXENV=py36
     - python: "3.7"
       env: TOXENV=py37
     - python: "3.8"
diff --git a/README.md b/README.md
index 302818a..b26afc6 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,13 @@ These are XBee Zigbee based radios that have been tested with the [zigpy-xbee](h
 - Digi XBee Series 2 (S2) modules. Note: These will need to be manually flashed with the Zigbee Coordinator API firmware via XCTU.
 - Digi XBee Series 3 (xbee3-24) modules
 
+# Port configuration
+
+- To configure __usb__ port path for your XBee serial device, just specify the TTY (serial com) port, example : `/dev/ttyACM0`
+
+Note! Users can change UART baud rate of your Digi XBee using the Digi's XCTU configuration tool. Using XCTU tool 
+enable the API communication mode -- `ATAP2`, set baudrate to 57600 -- `ATBD6`, save parameters.
+
 # Testing new releases
 
 Testing a new release of the zigpy-xbee library before it is released in Home Assistant.
diff --git a/setup.py b/setup.py
index 9325759..8713cc5 100644
--- a/setup.py
+++ b/setup.py
@@ -21,6 +21,6 @@
     author_email="rcloran@gmail.com",
     license="GPL-3.0",
     packages=find_packages(exclude=["*.tests"]),
-    install_requires=["pyserial-asyncio", "zigpy>= 0.20.a1"],
+    install_requires=["pyserial-asyncio", "zigpy>= 0.23.0"],
     tests_require=["pytest"],
 )
diff --git a/tox.ini b/tox.ini
index 5b62331..22cd660 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py36, py37, py38, lint, black
+envlist = py37, py38, lint, black
 skip_missing_interpreters = True
 
 [testenv]
@@ -21,8 +21,8 @@ deps =
 [testenv:lint]
 basepython = python3
 deps =
-    flake8
-    isort
+    flake8==3.7.9
+    isort==4.3.21
 commands =
     flake8
     isort --check -rc {toxinidir}/zigpy_xbee {toxinidir}/tests {toxinidir}/setup.py
diff --git a/zigpy_xbee/__init__.py b/zigpy_xbee/__init__.py
index 8364036..df4012f 100644
--- a/zigpy_xbee/__init__.py
+++ b/zigpy_xbee/__init__.py
@@ -1,5 +1,5 @@
 MAJOR_VERSION = 0
-MINOR_VERSION = 12
-PATCH_VERSION = "1"
+MINOR_VERSION = 13
+PATCH_VERSION = "0"
 __short_version__ = "{}.{}".format(MAJOR_VERSION, MINOR_VERSION)
 __version__ = "{}.{}".format(__short_version__, PATCH_VERSION)
diff --git a/zigpy_xbee/api.py b/zigpy_xbee/api.py
index e8a0292..0c66392 100644
--- a/zigpy_xbee/api.py
+++ b/zigpy_xbee/api.py
@@ -7,7 +7,6 @@
 
 import serial
 from zigpy.exceptions import APIException, DeliveryError
-from zigpy.types import LVList
 
 import zigpy_xbee
 from zigpy_xbee.config import CONF_DEVICE_BAUDRATE, CONF_DEVICE_PATH, SCHEMA_DEVICE
@@ -30,6 +29,11 @@ class ModemStatus(t.uint8_t, t.UndefinedEnum):
     NETWORK_SECURITY_KEY_UPDATED = 0x07
     VOLTAGE_SUPPLY_LIMIT_EXCEEDED = 0x0D
     MODEM_CONFIGURATION_CHANGED_WHILE_JOIN_IN_PROGRESS = 0x11
+    PAN_ID_CONFLICT_DETECTED = 0x3E
+    PAN_ID_UPDATED_DUE_TO_CONFLICT = 0x3F
+    JOIN_WINDOW_OPENED = 0x43
+    JOIN_WINDOW_CLOSED = 0x44
+    NETWORK_SECURITY_KEY_ROTATION_INITIATED = 0x45
 
     UNKNOWN_MODEM_STATUS = 0xFF
     _UNDEFINED = 0xFF
@@ -63,7 +67,7 @@ class ModemStatus(t.uint8_t, t.UndefinedEnum):
     ),
     "create_source_route": (
         0x21,
-        (t.FrameId, t.EUI64, t.NWK, t.uint8_t, LVList(t.NWK)),
+        (t.FrameId, t.EUI64, t.NWK, t.uint8_t, t.Relays),
         None,
     ),
     "register_joining_device": (0x24, (), None),
@@ -99,7 +103,7 @@ class ModemStatus(t.uint8_t, t.UndefinedEnum):
         None,
     ),
     "extended_status": (0x98, (), None),
-    "route_record_indicator": (0xA1, (t.EUI64, t.NWK, t.uint8_t, LVList(t.NWK)), None),
+    "route_record_indicator": (0xA1, (t.EUI64, t.NWK, t.uint8_t, t.Relays), None),
     "many_to_one_rri": (0xA3, (t.EUI64, t.NWK, t.uint8_t), None),
     "node_id_indicator": (0x95, (), None),
 }
diff --git a/zigpy_xbee/types.py b/zigpy_xbee/types.py
index 956f01a..210aacb 100644
--- a/zigpy_xbee/types.py
+++ b/zigpy_xbee/types.py
@@ -161,6 +161,10 @@ def __str__(self):
         return "0x{:04x}".format(self)
 
 
+class Relays(zigpy.types.LVList, item_type=NWK, length_type=uint8_t):
+    """List of Relays."""
+
+
 UNKNOWN_IEEE = EUI64([uint8_t(0xFF) for i in range(0, 8)])
 UNKNOWN_NWK = NWK(0xFFFE)