diff --git a/.coveragerc b/.coveragerc
index 2db2a6219b7..1cf45057dc9 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -818,6 +818,7 @@ omit =
     homeassistant/components/overkiz/binary_sensor.py
     homeassistant/components/overkiz/button.py
     homeassistant/components/overkiz/coordinator.py
+    homeassistant/components/overkiz/diagnostics.py
     homeassistant/components/overkiz/entity.py
     homeassistant/components/overkiz/executor.py
     homeassistant/components/overkiz/light.py
diff --git a/homeassistant/components/overkiz/diagnostics.py b/homeassistant/components/overkiz/diagnostics.py
new file mode 100644
index 00000000000..c5596a9cf3d
--- /dev/null
+++ b/homeassistant/components/overkiz/diagnostics.py
@@ -0,0 +1,21 @@
+"""Provides diagnostics for Overkiz."""
+from __future__ import annotations
+
+from typing import Any, cast
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+from . import HomeAssistantOverkizData
+from .const import DOMAIN
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    data: HomeAssistantOverkizData = hass.data[DOMAIN][entry.entry_id]
+    client = data.coordinator.client
+    setup = await client.get_diagnostic_data()
+
+    return cast(dict, setup)
diff --git a/homeassistant/components/overkiz/manifest.json b/homeassistant/components/overkiz/manifest.json
index 13694f16c3e..f2cffffc484 100644
--- a/homeassistant/components/overkiz/manifest.json
+++ b/homeassistant/components/overkiz/manifest.json
@@ -4,7 +4,7 @@
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/overkiz",
   "requirements": [
-    "pyoverkiz==1.1.1"
+    "pyoverkiz==1.2.0"
   ],
   "dhcp": [
     {
diff --git a/requirements_all.txt b/requirements_all.txt
index 05769a43a59..eb89acf5a91 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1740,7 +1740,7 @@ pyotgw==1.1b1
 pyotp==2.6.0
 
 # homeassistant.components.overkiz
-pyoverkiz==1.1.1
+pyoverkiz==1.2.0
 
 # homeassistant.components.openweathermap
 pyowm==3.2.0
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 02c3c12bfb4..0df68af8130 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1100,7 +1100,7 @@ pyotgw==1.1b1
 pyotp==2.6.0
 
 # homeassistant.components.overkiz
-pyoverkiz==1.1.1
+pyoverkiz==1.2.0
 
 # homeassistant.components.openweathermap
 pyowm==3.2.0