diff --git a/.changeset/remove-slots-and-harden-types.md b/.changeset/remove-slots-and-harden-types.md
deleted file mode 100644
index b4f0f2b..0000000
--- a/.changeset/remove-slots-and-harden-types.md
+++ /dev/null
@@ -1,26 +0,0 @@
----
-"@humanlayer/effect-machine": minor
----
-
-Remove the deprecated Slot API in favor of Effect services supplied through Layers to `.task()`, `.spawn()`, and `.background()`.
-
-This release also strengthens the package's type and runtime boundaries:
-
-- Requirement-growing builder methods are copy-on-write, keeping earlier machine aliases unchanged and truthfully typed.
-- Heterogeneous actor registries expose an eventless `ActorHandle`; exact typed spawn results remain `ActorRef<State, Event>`.
-- Transition and state-effect registries retain their state/event correlations without chained assertions.
-- State-effect contexts expose explicit `$init` and `$enter` lifecycle events.
-- Entity machines own their RPC protocol; remote Ask replies are decoded with event-specific schemas and client errors remain typed.
-- Persistence writes encode state and events through machine codecs, while loaded records remain `unknown` until full schema decoding.
-- Local and entity Ask paths support transforming reply codecs without duplicate decoding or stranded deferred replies.
-- Repeated and concurrent `actor.start` callers observe the original startup failure cause.
-- Source enforces unsafe, chained, widening, and unnecessary type-assertion rules. Tests remain exempt from unsafe and unnecessary assertion checks.
-
-Intentional API changes:
-
-- Remove `Slot`, slot schemas/types/errors, `Machine.make({ slots })`, `ctx.slots`, and slot provision options.
-- `toEntity(machine)` returns a machine-owned `MachineEntity`; call `EntityMachine.layer(entity, options?)`.
-- Call `makeEntityActorRef(entity, client, entityId)` so the wrapper can decode replies and preserve client errors.
-- `system.get`, `system.actors`, system events, and `actor.children` expose `ActorHandle`.
-- Transition and spawn-effect introspection expose guarded `matches` / `run` operations instead of erased handlers.
-- Legacy compatible constructors without a static tag can use `Machine.tagged(tag, constructor)`.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb7695f..891852e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,30 @@
 # @humanlayer/effect-machine
 
+## 0.19.0
+
+### Minor Changes
+
+- [#3](https://github.com/humanlayer/effect-machine/pull/3) [`bb1e377`](https://github.com/humanlayer/effect-machine/commit/bb1e37719535046c4b605436cd0fc89c6143889f) Thanks [@K-Mistele](https://github.com/K-Mistele)! - Remove the deprecated Slot API in favor of Effect services supplied through Layers to `.task()`, `.spawn()`, and `.background()`.
+
+  This release also strengthens the package's type and runtime boundaries:
+  - Requirement-growing builder methods are copy-on-write, keeping earlier machine aliases unchanged and truthfully typed.
+  - Heterogeneous actor registries expose an eventless `ActorHandle`; exact typed spawn results remain `ActorRef<State, Event>`.
+  - Transition and state-effect registries retain their state/event correlations without chained assertions.
+  - State-effect contexts expose explicit `$init` and `$enter` lifecycle events.
+  - Entity machines own their RPC protocol; remote Ask replies are decoded with event-specific schemas and client errors remain typed.
+  - Persistence writes encode state and events through machine codecs, while loaded records remain `unknown` until full schema decoding.
+  - Local and entity Ask paths support transforming reply codecs without duplicate decoding or stranded deferred replies.
+  - Repeated and concurrent `actor.start` callers observe the original startup failure cause.
+  - Source enforces unsafe, chained, widening, and unnecessary type-assertion rules. Tests remain exempt from unsafe and unnecessary assertion checks.
+
+  Intentional API changes:
+  - Remove `Slot`, slot schemas/types/errors, `Machine.make({ slots })`, `ctx.slots`, and slot provision options.
+  - `toEntity(machine)` returns a machine-owned `MachineEntity`; call `EntityMachine.layer(entity, options?)`.
+  - Call `makeEntityActorRef(entity, client, entityId)` so the wrapper can decode replies and preserve client errors.
+  - `system.get`, `system.actors`, system events, and `actor.children` expose `ActorHandle`.
+  - Transition and spawn-effect introspection expose guarded `matches` / `run` operations instead of erased handlers.
+  - Legacy compatible constructors without a static tag can use `Machine.tagged(tag, constructor)`.
+
 ## 0.18.0
 
 ### Minor Changes
diff --git a/package.json b/package.json
index 31ba05e..d91e97b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@humanlayer/effect-machine",
-  "version": "0.18.0",
+  "version": "0.19.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/humanlayer/effect-machine.git"