diff --git a/poolakey/src/main/java/ir/cafebazaar/poolakey/request/PurchaseRequest.kt b/poolakey/src/main/java/ir/cafebazaar/poolakey/request/PurchaseRequest.kt
index 1220f5c..7b38393 100644
--- a/poolakey/src/main/java/ir/cafebazaar/poolakey/request/PurchaseRequest.kt
+++ b/poolakey/src/main/java/ir/cafebazaar/poolakey/request/PurchaseRequest.kt
@@ -7,7 +7,7 @@ data class PurchaseRequest(
     val productId: String,
     val requestCode: Int,
     val payload: String? = null,
-    val dynamicPriceToken: String?
+    val dynamicPriceToken: String? = null
 )
 
 internal fun PurchaseRequest.purchaseExtraData(): Bundle {