diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 63a2803..05c1c6d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -5,7 +5,7 @@ default_language_version:
 repos:
   # Run manually in CI skipping the branch checks
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.16.4
+    rev: v0.16.6
     hooks:
       - id: ruff
         name: "Ruff check"
@@ -56,7 +56,7 @@ repos:
       - id: yamllint
         name: "YAML linting"
   - repo: https://github.com/shellcheck-py/shellcheck-py
-    rev: v0.11.0.1
+    rev: v0.11.0.1-1
     hooks:
       - id: shellcheck
         name: "Shell checking"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35521f1..f4eb1c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.6.12] - 2026-09-06
+
+### Added
+
+- v6 wireless mode `11NAHT20`
+
 ## [0.6.10] & [0.6.11] - 2026-07-05
 
 ### Added
diff --git a/README.md b/README.md
index 8213392..0b7b1cb 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,7 @@ from airos.airos6 import AirOS6, AirOS6Data
 from airos.airos8 import AirOS8, AirOS8Data
 from airos.helpers import DetectDeviceData, async_get_firmware_data
 
+
 async def main():
     """Main function to demonstrate library usage."""
     # Create an aiohttp session with SSL verification disabled.
@@ -75,7 +76,7 @@ async def main():
         "host": "192.168.1.2",
         "username": "ubnt",
         "password": "password",
-        "session": session
+        "session": session,
     }
 
     device_data: DetectDeviceData = await async_get_firmware_data(**conn_data)
@@ -88,7 +89,6 @@ async def main():
     # Initialize the AirOS device object.
     airos_device = airos_class(**conn_data)
 
-
     try:
         # Step 1: Login to the device.
         login_result = await airos_device.login()
@@ -120,6 +120,7 @@ async def main():
         # Ensure the aiohttp session is closed properly.
         await session.close()
 
+
 if __name__ == "__main__":
     asyncio.run(main())
 ```
diff --git a/airos/data.py b/airos/data.py
index ccf498a..86c00b4 100644
--- a/airos/data.py
+++ b/airos/data.py
@@ -149,6 +149,7 @@ class IeeeMode(Enum):
     _11NAHT40MINUS = "11NAHT40MINUS"  # On a v6 XM
     _11NAHT40PLUS = "11NAHT40PLUS"  # On a v6 XW
     _11NGHT20 = "11NGHT20"  # On a v6 XM 900 MHz device (NanoStation loco M900)
+    _11NAHT20 = "11NAHT20"  # On a PowerBeam M5 400 running v6
     # More to be added when known
 
 
diff --git a/pyproject.toml b/pyproject.toml
index a5a3828..5600f11 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name            = "airos"
-version         = "0.6.11"
+version         = "0.6.12"
 license         = "MIT"
 description     = "Ubiquiti airOS module(s) for Python 3."
 readme          = "README.md"
diff --git a/requirements-test.txt b/requirements-test.txt
index d2e0424..a536c94 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,4 +1,4 @@
-ruff==0.16.4
+ruff==0.16.6
 pytest==9.1.1
 pytest-asyncio==1.4.0
 pytest-cov==7.1.0