diff --git a/homeassistant/components/niko_home_control/config_flow.py b/homeassistant/components/niko_home_control/config_flow.py
index a49549996b9..f755670814a 100644
--- a/homeassistant/components/niko_home_control/config_flow.py
+++ b/homeassistant/components/niko_home_control/config_flow.py
@@ -39,6 +39,25 @@ class NikoHomeControlConfigFlow(ConfigFlow, domain=DOMAIN):
 
     MINOR_VERSION = 2
 
+    async def async_step_reconfigure(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Handle reconfiguration of the integration."""
+        errors: dict[str, str] = {}
+        if user_input is not None:
+            self._async_abort_entries_match({CONF_HOST: user_input[CONF_HOST]})
+            error = await test_connection(user_input[CONF_HOST])
+            if not error:
+                return self.async_update_reload_and_abort(
+                    self._get_reconfigure_entry(),
+                    data_updates=user_input,
+                )
+            errors["base"] = error
+
+        return self.async_show_form(
+            step_id="reconfigure", data_schema=DATA_SCHEMA, errors=errors
+        )
+
     async def async_step_user(
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
diff --git a/homeassistant/components/niko_home_control/strings.json b/homeassistant/components/niko_home_control/strings.json
index 6e2b50d4736..2abb5b71f46 100644
--- a/homeassistant/components/niko_home_control/strings.json
+++ b/homeassistant/components/niko_home_control/strings.json
@@ -9,13 +9,22 @@
         "data_description": {
           "host": "The hostname or IP address of the Niko Home Control controller."
         }
+      },
+      "reconfigure": {
+        "data": {
+          "host": "[%key:common::config_flow::data::host%]"
+        },
+        "data_description": {
+          "host": "[%key:component::niko_home_control::config::step::user::data_description::host%]"
+        }
       }
     },
     "error": {
       "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]"
     },
     "abort": {
-      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]",
+      "reconfigure_successful": "[%key:common::config_flow::abort::reconfigure_successful%]"
     }
   }
 }
diff --git a/tests/components/niko_home_control/conftest.py b/tests/components/niko_home_control/conftest.py
index 35260b387de..330488727bb 100644
--- a/tests/components/niko_home_control/conftest.py
+++ b/tests/components/niko_home_control/conftest.py
@@ -79,6 +79,7 @@ def mock_niko_home_control_connection(
         client = mock_client.return_value
         client.lights = [light, dimmable_light]
         client.covers = [cover]
+        client.connect = AsyncMock(return_value=True)
         yield client
 
 
diff --git a/tests/components/niko_home_control/test_config_flow.py b/tests/components/niko_home_control/test_config_flow.py
index 2878dc91138..41f9a3dcf9e 100644
--- a/tests/components/niko_home_control/test_config_flow.py
+++ b/tests/components/niko_home_control/test_config_flow.py
@@ -36,7 +36,7 @@ async def test_full_flow(
     assert len(mock_setup_entry.mock_calls) == 1
 
 
-async def test_cannot_connect(hass: HomeAssistant, mock_setup_entry: AsyncMock) -> None:
+async def test_cannot_connect(hass: HomeAssistant) -> None:
     """Test the cannot connect error."""
 
     result = await hass.config_entries.flow.async_init(
@@ -69,7 +69,7 @@ async def test_cannot_connect(hass: HomeAssistant, mock_setup_entry: AsyncMock)
 
 
 async def test_duplicate_entry(
-    hass: HomeAssistant, mock_setup_entry: AsyncMock, mock_config_entry: MockConfigEntry
+    hass: HomeAssistant, mock_config_entry: MockConfigEntry
 ) -> None:
     """Test uniqueness."""
 
@@ -88,3 +88,83 @@ async def test_duplicate_entry(
 
     assert result["type"] is FlowResultType.ABORT
     assert result["reason"] == "already_configured"
+
+
+async def test_duplicate_reconfigure_entry(
+    hass: HomeAssistant,
+    mock_niko_home_control_connection: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test reconfigure to other existing entry."""
+    mock_config_entry.add_to_hass(hass)
+    another_entry = MockConfigEntry(
+        domain=DOMAIN,
+        title="Niko Home Control",
+        data={CONF_HOST: "192.168.0.124"},
+        entry_id="01JFN93M7KRA38V5AMPCJ2JYYB",
+    )
+    another_entry.add_to_hass(hass)
+
+    result = await mock_config_entry.start_reconfigure_flow(hass)
+    assert result["type"] is FlowResultType.FORM
+    assert result["errors"] == {}
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], {CONF_HOST: "192.168.0.124"}
+    )
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "already_configured"
+
+
+async def test_reconfigure(
+    hass: HomeAssistant,
+    mock_niko_home_control_connection: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test the reconfigure flow."""
+    mock_config_entry.add_to_hass(hass)
+
+    result = await mock_config_entry.start_reconfigure_flow(hass)
+
+    assert result["type"] is FlowResultType.FORM
+    assert set(result["data_schema"].schema) == {CONF_HOST}
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {CONF_HOST: "192.168.0.122"},
+    )
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "reconfigure_successful"
+
+
+async def test_reconfigure_cannot_connect(
+    hass: HomeAssistant,
+    mock_niko_home_control_connection: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test reconfiguration with connection error."""
+    mock_config_entry.add_to_hass(hass)
+
+    mock_niko_home_control_connection.connect.side_effect = Exception("cannot_connect")
+
+    result = await mock_config_entry.start_reconfigure_flow(hass)
+
+    assert result["type"] is FlowResultType.FORM
+    assert result["errors"] == {}
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {CONF_HOST: "192.168.0.122"},
+    )
+
+    assert result["type"] is FlowResultType.FORM
+    assert result["errors"] == {"base": "cannot_connect"}
+
+    mock_niko_home_control_connection.connect.side_effect = None
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {CONF_HOST: "192.168.0.122"},
+    )
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "reconfigure_successful"