diff --git a/test/model/test_controller.py b/test/model/test_controller.py
index 514581ec8..7b970b842 100644
--- a/test/model/test_controller.py
+++ b/test/model/test_controller.py
@@ -2254,6 +2254,11 @@ async def test_additional_events(controller: Controller) -> None:
         {"source": "controller", "event": "inclusion started", "strategy": 0},
     )
     controller.receive_event(event)
+    event = Event(
+        "inclusion state changed",
+        {"source": "controller", "event": "inclusion state changed", "state": 1},
+    )
+    controller.receive_event(event)
     event = Event(
         "inclusion stopped", {"source": "controller", "event": "inclusion stopped"}
     )
diff --git a/zwave_js_server/model/controller/__init__.py b/zwave_js_server/model/controller/__init__.py
index 55ae96f42..e4c01af8c 100644
--- a/zwave_js_server/model/controller/__init__.py
+++ b/zwave_js_server/model/controller/__init__.py
@@ -901,6 +901,9 @@ def handle_exclusion_failed(self, event: Event) -> None:
     def handle_inclusion_started(self, event: Event) -> None:
         """Process an inclusion started event."""
 
+    def handle_inclusion_state_changed(self, event: Event) -> None:
+        """Process an inclusion state changed event."""
+
     def handle_exclusion_started(self, event: Event) -> None:
         """Process an exclusion started event."""
 
diff --git a/zwave_js_server/model/controller/event_model.py b/zwave_js_server/model/controller/event_model.py
index 65e3aea58..e347d5db2 100644
--- a/zwave_js_server/model/controller/event_model.py
+++ b/zwave_js_server/model/controller/event_model.py
@@ -4,7 +4,7 @@
 
 from typing import Literal, TypedDict
 
-from ...const import InclusionStrategy, RemoveNodeReason
+from ...const import InclusionState, InclusionStrategy, RemoveNodeReason
 from ...event import BaseEventModel
 from ..node.data_model import FoundNodeDataType, NodeDataType
 from .firmware import (
@@ -154,6 +154,22 @@ def from_dict(cls, data: dict) -> InclusionStartedEventModel:
         )
 
 
+class InclusionStateChangedEventModel(BaseControllerEventModel):
+    """Model for `inclusion state changed` event data."""
+
+    event: Literal["inclusion state changed"]
+    state: InclusionState
+
+    @classmethod
+    def from_dict(cls, data: dict) -> InclusionStateChangedEventModel:
+        """Initialize from dict."""
+        return cls(
+            source=data["source"],
+            event=data["event"],
+            state=data["state"],
+        )
+
+
 class InclusionStoppedEventModel(BaseControllerEventModel):
     """Model for `inclusion stopped` event data."""
 
@@ -336,6 +352,7 @@ def from_dict(cls, data: dict) -> StatusChangedEventModel:
     "inclusion aborted": InclusionAbortedEventModel,
     "inclusion failed": InclusionFailedEventModel,
     "inclusion started": InclusionStartedEventModel,
+    "inclusion state changed": InclusionStateChangedEventModel,
     "inclusion stopped": InclusionStoppedEventModel,
     "node added": NodeAddedEventModel,
     "node found": NodeFoundEventModel,