diff --git a/convention-plugins/src/main/kotlin/root.publication.gradle.kts b/convention-plugins/src/main/kotlin/root.publication.gradle.kts
index 8ea8705..4a12397 100644
--- a/convention-plugins/src/main/kotlin/root.publication.gradle.kts
+++ b/convention-plugins/src/main/kotlin/root.publication.gradle.kts
@@ -3,7 +3,7 @@ plugins {
 }
 object Conf {
     const val GROUP = "net.kigawa"
-    const val VERSION = "2.0.1"
+    const val VERSION = "2.1.0"
 }
 
 group = Conf.GROUP
diff --git a/hakate/src/commonMain/kotlin/net/kigawa/hakate/api/state/StateContext.kt b/hakate/src/commonMain/kotlin/net/kigawa/hakate/api/state/StateContext.kt
index 988521d..aa8a172 100644
--- a/hakate/src/commonMain/kotlin/net/kigawa/hakate/api/state/StateContext.kt
+++ b/hakate/src/commonMain/kotlin/net/kigawa/hakate/api/state/StateContext.kt
@@ -1,8 +1,10 @@
 package net.kigawa.hakate.api.state
 
+import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Job
 
 interface StateContext {
+    val coroutineScope: CoroutineScope
     fun dispatcher(): StateDispatcher
     fun dispatch(block: suspend StateContext.() -> Unit): Job
     fun <T, R> State<T>.collect(defaultValue: R, block: suspend StateContext.(value: T, prev: R) -> R) =
@@ -11,4 +13,5 @@ interface StateContext {
     fun <T> State<T>.collect(block: suspend StateContext.(value: T) -> Unit) =
         this.collect(this@StateContext, block)
 
+    fun cancel()
 }
\ No newline at end of file
diff --git a/hakate/src/commonMain/kotlin/net/kigawa/hakate/impl/state/StateContextImpl.kt b/hakate/src/commonMain/kotlin/net/kigawa/hakate/impl/state/StateContextImpl.kt
index bd26813..01e6d27 100644
--- a/hakate/src/commonMain/kotlin/net/kigawa/hakate/impl/state/StateContextImpl.kt
+++ b/hakate/src/commonMain/kotlin/net/kigawa/hakate/impl/state/StateContextImpl.kt
@@ -2,6 +2,7 @@ package net.kigawa.hakate.impl.state
 
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Job
+import kotlinx.coroutines.cancel
 import kotlinx.coroutines.launch
 import net.kigawa.hakate.api.state.StateContext
 import net.kigawa.hakate.api.state.StateDispatcher
@@ -9,16 +10,20 @@ import net.kigawa.hakate.impl.Utl.suspendApply
 
 class StateContextImpl(
     private val dispatcher: StateDispatcher,
-    private val scope: CoroutineScope,
+    override val coroutineScope: CoroutineScope,
 ) : StateContext {
     override fun dispatcher(): StateDispatcher = dispatcher
     override fun dispatch(
         block: suspend StateContext.() -> Unit,
     ): Job {
-        return scope.launch {
+        return coroutineScope.launch {
             StateContextImpl(dispatcher, this@launch).suspendApply {
                 block()
             }
         }
     }
+
+    override fun cancel() {
+        coroutineScope.cancel("cancel by StateContext")
+    }
 }
\ No newline at end of file