diff --git a/infra/config-store/src/main/java/com/simprints/infra/config/store/models/AgeGroup.kt b/infra/config-store/src/main/java/com/simprints/infra/config/store/models/AgeGroup.kt
index 874b8a57d2..ff904feb31 100644
--- a/infra/config-store/src/main/java/com/simprints/infra/config/store/models/AgeGroup.kt
+++ b/infra/config-store/src/main/java/com/simprints/infra/config/store/models/AgeGroup.kt
@@ -1,11 +1,12 @@
 package com.simprints.infra.config.store.models
 
+import java.io.Serializable
+
 data class AgeGroup(
     val startInclusive: Int,
     val endExclusive: Int?,
-) {
-    fun isEmpty(): Boolean =
-        startInclusive == 0 && (endExclusive == null || endExclusive == 0)
+) : Serializable {
+    fun isEmpty() = startInclusive == 0 && (endExclusive == null || endExclusive == 0)
 
     fun includes(age: Int): Boolean {
         val endExclusive = endExclusive ?: Int.MAX_VALUE
@@ -17,4 +18,4 @@ data class AgeGroup(
         val otherEndExclusive = otherRange.endExclusive ?: Int.MAX_VALUE
         return startInclusive <= otherRange.startInclusive && otherEndExclusive <= thisEndExclusive
     }
-}
\ No newline at end of file
+}