diff --git a/ts-core/src/main/kotlin/cn/tursom/core/context/Context.kt b/ts-core/src/main/kotlin/cn/tursom/core/context/Context.kt
index 10a549e..cd9a2f7 100644
--- a/ts-core/src/main/kotlin/cn/tursom/core/context/Context.kt
+++ b/ts-core/src/main/kotlin/cn/tursom/core/context/Context.kt
@@ -15,7 +15,7 @@ interface Context {
   }
 
   operator fun <T> get(key: ContextKey<T>): T?
-  fun <T> set(key: ContextKey<T>, value: T): Context
+  operator fun <T> set(key: ContextKey<T>, value: T): Context
 
   fun checkEnv(key: ContextKey<*>) {
     if (envId != key.envId) {