diff --git a/build.gradle b/build.gradle
index 72c4261..89b27e4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ plugins {
 }
 
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 dependencies {
diff --git a/src/main/java/io/craftgate/request/RetrieveLoyaltiesRequest.java b/src/main/java/io/craftgate/request/RetrieveLoyaltiesRequest.java
index 5d48eb1..d017a24 100644
--- a/src/main/java/io/craftgate/request/RetrieveLoyaltiesRequest.java
+++ b/src/main/java/io/craftgate/request/RetrieveLoyaltiesRequest.java
@@ -1,10 +1,11 @@
 package io.craftgate.request;
 
+import io.craftgate.model.LoyaltyType;
+import io.craftgate.request.common.BaseRequest;
 import io.craftgate.request.dto.FraudCheckParameters;
 import lombok.Data;
-import lombok.experimental.SuperBuilder;
 import lombok.EqualsAndHashCode;
-import io.craftgate.request.common.BaseRequest;
+import lombok.experimental.SuperBuilder;
 
 @Data
 @SuperBuilder
@@ -14,10 +15,10 @@ public class RetrieveLoyaltiesRequest extends BaseRequest {
     private String expireYear;
     private String expireMonth;
     private String cvc;
-
     private String cardUserKey;
     private String cardToken;
-
+    private Integer installment;
+    private LoyaltyType loyaltyType;
     private String clientIp;
     private String conversationId;
     private FraudCheckParameters fraudParams;
diff --git a/src/test/java/io/craftgate/sample/PaymentSample.java b/src/test/java/io/craftgate/sample/PaymentSample.java
index c2e7f1d..3e16c97 100644
--- a/src/test/java/io/craftgate/sample/PaymentSample.java
+++ b/src/test/java/io/craftgate/sample/PaymentSample.java
@@ -1969,6 +1969,27 @@ void retrieve_loyalties() {
         assertEquals(new BigDecimal("5.20"), response.getLoyalties().get(0).getReward().getFirmRewardMoney());
     }
 
+    @Test
+    void retrieve_loyalties_by_installment() {
+        RetrieveLoyaltiesRequest request = RetrieveLoyaltiesRequest.builder()
+                .cardNumber("5482370000000003")
+                .expireYear("2044")
+                .expireMonth("07")
+                .cvc("000")
+                .installment(2)
+                .loyaltyType(LoyaltyType.ADDITIONAL_INSTALLMENT)
+                .build();
+
+        RetrieveLoyaltiesResponse response = craftgate.payment().retrieveLoyalties(request);
+        assertNotNull(response);
+        assertEquals("Maximum", response.getCardBrand());
+        assertNotNull(response.getLoyalties());
+        assertFalse(response.getLoyalties().isEmpty());
+        assertEquals(LoyaltyType.ADDITIONAL_INSTALLMENT, response.getLoyalties().get(0).getType());
+        assertEquals("+5 taksit", response.getLoyalties().get(0).getMessage());
+        assertEquals("installment5", response.getLoyalties().get(0).getLoyaltyData().getCode());
+    }
+
     @Test
     void refund_payment() {
         RefundPaymentRequest request = RefundPaymentRequest.builder()