diff --git a/src/lifecycle.ts b/src/lifecycle.ts
index 1c1429c..970b2e7 100644
--- a/src/lifecycle.ts
+++ b/src/lifecycle.ts
@@ -41,15 +41,18 @@ export class Lifecycle {
   constructor(private ctx: Context, private config: Lifecycle.Config) {
     (this as Lifecycle.Delegates).on('hook', (name, listener, prepend) => {
       const method = prepend ? 'unshift' : 'push'
+      const { runtime, disposables } = this.caller.state
       if (name === 'ready' && this.isActive) {
         this.queue(listener())
         return () => false
       } else if (name === 'dispose') {
-        this.caller.state.disposables[method](listener as any)
-        return () => remove(this.caller.state.disposables, listener)
+        disposables[method](listener as any)
+        return () => remove(disposables, listener)
       } else if (name === 'fork') {
-        this.caller.state.runtime.forkers[method](listener as any)
-        return () => remove(this.caller.state.runtime.forkers, listener)
+        runtime.forkers[method](listener as any)
+        const dispose = () => remove(runtime.forkers, listener)
+        disposables.push(dispose)
+        return dispose
       }
     })
   }
@@ -221,5 +224,6 @@ export interface Events {
   'fork': Plugin.Function
   'dispose'(): Awaitable<void>
   'service'(name: string, oldValue: any): void
+  'config'(state: Plugin.State, resolved: any, original: any): boolean | void
   'hook'(name: string, listener: Function, prepend: boolean): () => boolean
 }
diff --git a/src/plugin.ts b/src/plugin.ts
index db121de..7e768b2 100644
--- a/src/plugin.ts
+++ b/src/plugin.ts
@@ -46,8 +46,9 @@ export namespace Plugin {
     }
 
     update(config: any) {
-      config = Registry.validate(this.runtime.plugin, config)
-      this.config = config
+      const resolved = Registry.validate(this.runtime.plugin, config)
+      if (this.context.bail('config', this, resolved, config)) return
+      this.config = resolved
       this.restart()
     }
 
@@ -169,8 +170,8 @@ export namespace Plugin {
         this.apply(this.context, this.config)
       }
 
-      for (const state of this.children) {
-        state.restart()
+      for (const fork of this.children) {
+        fork.restart()
       }
     }
   }
diff --git a/src/registry.ts b/src/registry.ts
index 8a6c385..18b7cf8 100644
--- a/src/registry.ts
+++ b/src/registry.ts
@@ -19,7 +19,7 @@ export namespace Registry {
 export class Registry extends Map<Plugin, Plugin.Runtime> {
   constructor(public app: App, private config: Registry.Config) {
     super()
-    app.state = new Plugin.Runtime(this, null, null)
+    app.state = new Plugin.Runtime(this, null, config)
   }
 
   get caller(): Context {
diff --git a/tests/fork.spec.ts b/tests/fork.spec.ts
index 348fcc1..804efe9 100644
--- a/tests/fork.spec.ts
+++ b/tests/fork.spec.ts
@@ -92,8 +92,9 @@ describe('Fork', () => {
     })
     const plugin = {
       using: ['foo'],
-      reusable: true,
-      apply: callback,
+      apply(ctx: Context) {
+        ctx.on('fork', callback)
+      },
     }
 
     app.plugin(plugin)
diff --git a/tests/update.spec.ts b/tests/update.spec.ts
index 88ed794..e3fbad3 100644
--- a/tests/update.spec.ts
+++ b/tests/update.spec.ts
@@ -3,7 +3,7 @@ import { expect } from 'chai'
 import { event } from './shared'
 import * as jest from 'jest-mock'
 
-describe('Config', () => {
+describe('Update', () => {
   it('basic support', () => {
     const app = new App()
     const dispose = jest.fn(() => {})