diff --git a/.strict-typing b/.strict-typing
index 8373e0623f5..8ad4c644110 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -223,6 +223,7 @@ homeassistant.components.onewire.*
 homeassistant.components.open_meteo.*
 homeassistant.components.openexchangerates.*
 homeassistant.components.openuv.*
+homeassistant.components.otbr.*
 homeassistant.components.overkiz.*
 homeassistant.components.peco.*
 homeassistant.components.persistent_notification.*
diff --git a/homeassistant/components/otbr/__init__.py b/homeassistant/components/otbr/__init__.py
index 3dee2a8b92e..046643480ca 100644
--- a/homeassistant/components/otbr/__init__.py
+++ b/homeassistant/components/otbr/__init__.py
@@ -1,8 +1,10 @@
 """The Open Thread Border Router integration."""
 from __future__ import annotations
 
+from collections.abc import Callable, Coroutine
 import dataclasses
 from functools import wraps
+from typing import Any, Concatenate, ParamSpec, TypeVar
 
 import python_otbr_api
 
@@ -15,12 +17,17 @@ from homeassistant.helpers.typing import ConfigType
 from . import websocket_api
 from .const import DOMAIN
 
+_R = TypeVar("_R")
+_P = ParamSpec("_P")
 
-def _handle_otbr_error(func):
+
+def _handle_otbr_error(
+    func: Callable[Concatenate[OTBRData, _P], Coroutine[Any, Any, _R]]
+) -> Callable[Concatenate[OTBRData, _P], Coroutine[Any, Any, _R]]:
     """Handle OTBR errors."""
 
     @wraps(func)
-    async def _func(self, *args, **kwargs):
+    async def _func(self: OTBRData, *args: _P.args, **kwargs: _P.kwargs) -> _R:
         try:
             return await func(self, *args, **kwargs)
         except python_otbr_api.OTBRError as exc:
diff --git a/homeassistant/components/otbr/manifest.json b/homeassistant/components/otbr/manifest.json
index 7247899b80a..796dcd00141 100644
--- a/homeassistant/components/otbr/manifest.json
+++ b/homeassistant/components/otbr/manifest.json
@@ -4,7 +4,7 @@
   "config_flow": true,
   "dependencies": ["thread"],
   "documentation": "https://www.home-assistant.io/integrations/otbr",
-  "requirements": ["python-otbr-api==1.0.1"],
+  "requirements": ["python-otbr-api==1.0.2"],
   "after_dependencies": ["hassio"],
   "codeowners": ["@home-assistant/core"],
   "iot_class": "local_polling",
diff --git a/homeassistant/components/otbr/websocket_api.py b/homeassistant/components/otbr/websocket_api.py
index 1462bd5d61a..a07819793b1 100644
--- a/homeassistant/components/otbr/websocket_api.py
+++ b/homeassistant/components/otbr/websocket_api.py
@@ -17,7 +17,7 @@ if TYPE_CHECKING:
 
 
 @callback
-def async_setup(hass) -> None:
+def async_setup(hass: HomeAssistant) -> None:
     """Set up the OTBR Websocket API."""
     async_register_command(hass, websocket_info)
 
@@ -44,13 +44,10 @@ async def websocket_info(
         connection.send_error(msg["id"], "get_dataset_failed", str(exc))
         return
 
-    if dataset:
-        dataset = dataset.hex()
-
     connection.send_result(
         msg["id"],
         {
             "url": data.url,
-            "active_dataset_tlvs": dataset,
+            "active_dataset_tlvs": dataset.hex() if dataset else None,
         },
     )
diff --git a/mypy.ini b/mypy.ini
index b60fb346008..7212592dcdd 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1984,6 +1984,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.otbr.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.overkiz.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true
diff --git a/requirements_all.txt b/requirements_all.txt
index 8cfb6cd2445..f9b74f200a5 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2081,7 +2081,7 @@ python-mystrom==1.1.2
 python-nest==4.2.0
 
 # homeassistant.components.otbr
-python-otbr-api==1.0.1
+python-otbr-api==1.0.2
 
 # homeassistant.components.picnic
 python-picnic-api==1.1.0
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 8b95c95f8c9..4ae2de8c488 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1471,7 +1471,7 @@ python-miio==0.5.12
 python-nest==4.2.0
 
 # homeassistant.components.otbr
-python-otbr-api==1.0.1
+python-otbr-api==1.0.2
 
 # homeassistant.components.picnic
 python-picnic-api==1.1.0