diff --git a/blog/2024-09-23-state-constants-lock-deprecation.md b/blog/2024-09-23-state-constants-lock-deprecation.md
new file mode 100644
index 00000000..0057243d
--- /dev/null
+++ b/blog/2024-09-23-state-constants-lock-deprecation.md
@@ -0,0 +1,13 @@
+---
+author: G Johansson
+authorURL: https://github.com/gjohansson-ST
+authorImageURL: https://avatars.githubusercontent.com/u/62932417?v=4
+authorTwitter: GJohansson
+title: "Deprecating state constants for lock"
+---
+
+As of Home Assistant Core 2024.10, the constants used to return state in `LockEntity` are deprecated and replaced by the `LockState` enum.
+
+There is a one-year deprecation period, and the constants will stop working from 2025.10 to ensure all custom integration authors have time to adjust.
+
+As the `state` property is not meant to be overwritten, in most cases this change will only affect other Entity properties or tests rather than the `state` property.
diff --git a/docs/core/entity/lock.md b/docs/core/entity/lock.md
index 5b0b2ef4..98d40ba2 100644
--- a/docs/core/entity/lock.md
+++ b/docs/core/entity/lock.md
@@ -22,6 +22,20 @@ Properties should always only return information from memory and not do I/O (lik
 | is_opening | bool | None | Indication of whether the lock is currently opening. Used to determine `state`.
 | is_open | bool | None | Indication of whether the lock is currently open. Used to determine `state`.
 
+### States
+
+The state is defined by setting the above properties. The resulting state is using the `LockState` enum to return one of the below members.
+
+| Value       | Description                                                        |
+|-------------|--------------------------------------------------------------------|
+| `LOCKED`    | The lock is locked.                                                |
+| `LOCKING`   | The lock is locking.                                               |
+| `UNLOCKING` | The lock is unlocking.                                             |
+| `UNLOCKED`  | The lock is unlocked.                                             |
+| `JAMMED`    | The lock is currently jammed.                                      |
+| `OPENING`   | The lock is opening.                                               |
+| `OPEN`      | The lock is open.                                                  |
+
 ## Supported features
 
 Supported features are defined by using values in the `LockEntityFeature` enum