diff --git a/놀이터(예제 코드 작성)/jackson/src/main/kotlin/com/banjjoknim/playground/model/DoSerialize.kt b/놀이터(예제 코드 작성)/jackson/src/main/kotlin/com/banjjoknim/playground/model/DoSerialize.kt
new file mode 100644
index 0000000..ef113a6
--- /dev/null
+++ b/놀이터(예제 코드 작성)/jackson/src/main/kotlin/com/banjjoknim/playground/model/DoSerialize.kt	
@@ -0,0 +1,5 @@
+package com.banjjoknim.playground.model
+
+@Retention(AnnotationRetention.RUNTIME)
+@Target(AnnotationTarget.PROPERTY)
+annotation class DoSerialize(val doSerialize: Boolean = false)