diff --git a/core/src/main/kotlin/com/labijie/caching/kryo/InstantSerializer.kt b/core/src/main/kotlin/com/labijie/caching/kryo/InstantSerializer.kt
new file mode 100644
index 0000000..59d4884
--- /dev/null
+++ b/core/src/main/kotlin/com/labijie/caching/kryo/InstantSerializer.kt
@@ -0,0 +1,22 @@
+/**
+ * @author Anders Xiao
+ * @date 2024-06-19
+ */
+package com.labijie.caching.kryo
+
+import com.esotericsoftware.kryo.Kryo
+import com.esotericsoftware.kryo.Serializer
+import com.esotericsoftware.kryo.io.Input
+import com.esotericsoftware.kryo.io.Output
+import java.time.Instant
+
+
+object InstantSerializer : Serializer<Instant>() {
+    override fun write(kryo: Kryo, output: Output, instant: Instant) {
+        output.writeLong(instant.toEpochMilli())
+    }
+
+    override fun read(kryo: Kryo, input: Input, instantClass: Class<out Instant>): Instant {
+        return Instant.ofEpochMilli(input.readLong())
+    }
+}
\ No newline at end of file
diff --git a/core/src/main/kotlin/com/labijie/caching/kryo/KryoUtils.kt b/core/src/main/kotlin/com/labijie/caching/kryo/KryoUtils.kt
index de98e22..6e17ebf 100644
--- a/core/src/main/kotlin/com/labijie/caching/kryo/KryoUtils.kt
+++ b/core/src/main/kotlin/com/labijie/caching/kryo/KryoUtils.kt
@@ -76,7 +76,7 @@ object KryoUtils {
         this.register(Charset::class.java, 73)
         this.register(URL::class.java, 74)
         this.register(Duration::class.java, DurationSerializer, 75)
-        this.register(LocalDateTime::class.java, 76)
-        this.register(Instant::class.java, 77)
+        this.register(LocalDateTime::class.java, LocalDateTimeSerializer, 76)
+        this.register(Instant::class.java, InstantSerializer, 77)
     }
 }
\ No newline at end of file
diff --git a/core/src/main/kotlin/com/labijie/caching/kryo/LocalDateTimeSerializer.kt b/core/src/main/kotlin/com/labijie/caching/kryo/LocalDateTimeSerializer.kt
new file mode 100644
index 0000000..0d1f63d
--- /dev/null
+++ b/core/src/main/kotlin/com/labijie/caching/kryo/LocalDateTimeSerializer.kt
@@ -0,0 +1,25 @@
+/**
+ * @author Anders Xiao
+ * @date 2024-06-19
+ */
+package com.labijie.caching.kryo
+
+import com.esotericsoftware.kryo.Kryo
+import com.esotericsoftware.kryo.Serializer
+import com.esotericsoftware.kryo.io.Input
+import com.esotericsoftware.kryo.io.Output
+import java.time.Instant
+import java.time.LocalDateTime
+import java.time.ZoneOffset
+
+
+object LocalDateTimeSerializer : Serializer<LocalDateTime>() {
+    override fun write(kryo: Kryo, output: Output, datetime: LocalDateTime) {
+        output.writeLong(datetime.toInstant(ZoneOffset.UTC).toEpochMilli())
+    }
+
+    override fun read(kryo: Kryo, input: Input, datetime: Class<out LocalDateTime>): LocalDateTime {
+        val instant = Instant.ofEpochMilli(input.readLong())
+        return LocalDateTime.ofInstant(instant, ZoneOffset.UTC)
+    }
+}
\ No newline at end of file