diff --git a/README.md b/README.md
index 2e94d0d..d8a789a 100644
--- a/README.md
+++ b/README.md
@@ -38,14 +38,14 @@ For _Maven_, add the following dependency to your `pom.xml`:
 <dependency>
     <groupId>me.cryptopay</groupId>
     <artifactId>cryptopay-java</artifactId>
-    <version>2.2.0</version>
+    <version>3.0.0</version>
 </dependency>
 ```
 
 For _Gradle_, add the following dependency to your `build.gradle`:
 
 ```groovy
-implementation group: 'me.cryptopay', name: 'cryptopay-java', version: '2.2.0'
+implementation group: 'me.cryptopay', name: 'cryptopay-java', version: '3.0.0'
 ```
 
 ### Requirements
@@ -380,10 +380,7 @@ InvoiceRecalculationResult result = cryptopay.invoices()
 ```java
 UUID invoiceId = UUID.fromString("7e274430-e20f-4321-8748-20824287ae44");
 
-InvoiceRefundParams invoiceRefundParams = new InvoiceRefundParams();
-invoiceRefundParams.setAddress("0xf3532c1fd002665ec54d46a50787e0c69c76cd44");
-
-InvoiceRefundResult result = cryptopay.invoices().createRefund(invoiceId, invoiceRefundParams).execute();
+InvoiceRefundResult result = cryptopay.invoices().createRefund(invoiceId).execute();
 ```
 
 #### List invoices
diff --git a/example/cryptopay-java-test/pom.xml b/example/cryptopay-java-test/pom.xml
index 1d9cf12..f0dfa5c 100644
--- a/example/cryptopay-java-test/pom.xml
+++ b/example/cryptopay-java-test/pom.xml
@@ -14,7 +14,7 @@
     <properties>
         <java.version>11</java.version>
         <encoding>UTF-8</encoding>
-        <cryptopay-java.version>2.2.0</cryptopay-java.version>
+        <cryptopay-java.version>3.0.0</cryptopay-java.version>
         <logback.version>1.2.10</logback.version>
         <commons-configuration2.version>2.7</commons-configuration2.version>
     </properties>
diff --git a/pom.xml b/pom.xml
index 624022c..eb26606 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>me.cryptopay</groupId>
     <artifactId>cryptopay-java</artifactId>
-    <version>2.2.0</version>
+    <version>3.0.0</version>
     <packaging>jar</packaging>
 
     <name>Cryptopay Java</name>
diff --git a/src/main/java/me/cryptopay/Cryptopay.java b/src/main/java/me/cryptopay/Cryptopay.java
index be4ba83..91c17ae 100644
--- a/src/main/java/me/cryptopay/Cryptopay.java
+++ b/src/main/java/me/cryptopay/Cryptopay.java
@@ -28,7 +28,7 @@ public final class Cryptopay {
     public static final String API_URL_SANDBOX = "https://business-sandbox.cryptopay.me";
 
     private static final String USER_AGENT = "Cryptopay Java %s";
-    private static final String VERSION = "2.2.0";
+    private static final String VERSION = "3.0.0";
 
     private final ApiClient apiClient;
     private final JSON json;
diff --git a/src/main/java/me/cryptopay/api/Invoices.java b/src/main/java/me/cryptopay/api/Invoices.java
index 451b59d..caee64f 100644
--- a/src/main/java/me/cryptopay/api/Invoices.java
+++ b/src/main/java/me/cryptopay/api/Invoices.java
@@ -11,7 +11,6 @@
 import me.cryptopay.model.InvoiceRecalculationParams;
 import me.cryptopay.model.InvoiceRecalculationResult;
 import me.cryptopay.model.InvoiceRefundListResult;
-import me.cryptopay.model.InvoiceRefundParams;
 import me.cryptopay.model.InvoiceRefundResult;
 import me.cryptopay.model.InvoiceResult;
 import me.cryptopay.net.ApiClient;
@@ -67,12 +66,10 @@ public CreateRecalculationCall createRecalculation(
      * Create invoice refund.
      *
      * @param invoiceId Invoice ID
-     * @param invoiceRefundParams
      * @return CreateRefundCall
      */
-    public CreateRefundCall createRefund(
-            final UUID invoiceId, final InvoiceRefundParams invoiceRefundParams) {
-        return new CreateRefundCall(invoiceId, invoiceRefundParams);
+    public CreateRefundCall createRefund(final UUID invoiceId) {
+        return new CreateRefundCall(invoiceId);
     }
 
     /**
@@ -183,11 +180,20 @@ public InvoiceRecalculationResult execute() throws ApiException {
     public final class CreateRefundCall {
         private final ApiRequest request;
 
-        private CreateRefundCall(
-                final UUID invoiceId, final InvoiceRefundParams invoiceRefundParams) {
+        private CreateRefundCall(final UUID invoiceId) {
             this.request = new ApiRequest("POST", "/api/invoices/{invoice_id}/refunds");
             request.addPathParam("invoice_id", invoiceId.toString());
-            request.setBody(invoiceRefundParams);
+        }
+
+        /**
+         * Set body.
+         *
+         * @param body
+         * @return createRefundCall
+         */
+        public CreateRefundCall body(final Object body) {
+            request.setBody(body);
+            return this;
         }
 
         /**
diff --git a/src/main/java/me/cryptopay/model/CoinWithdrawalParams.java b/src/main/java/me/cryptopay/model/CoinWithdrawalParams.java
index 9a89203..30b5509 100644
--- a/src/main/java/me/cryptopay/model/CoinWithdrawalParams.java
+++ b/src/main/java/me/cryptopay/model/CoinWithdrawalParams.java
@@ -20,12 +20,15 @@ public final class CoinWithdrawalParams {
     @SerializedName("network")
     private String network;
 
+    @Deprecated
     @SerializedName("charged_amount")
     private BigDecimal chargedAmount;
 
+    @Deprecated
     @SerializedName("charged_amount_to_send")
     private BigDecimal chargedAmountToSend;
 
+    @Deprecated
     @SerializedName("received_amount")
     private BigDecimal receivedAmount;
 
@@ -47,6 +50,18 @@ public final class CoinWithdrawalParams {
     @SerializedName("beneficiary")
     private Beneficiary beneficiary;
 
+    @SerializedName("amount")
+    private BigDecimal amount;
+
+    @SerializedName("amount_currency")
+    private String amountCurrency;
+
+    @SerializedName("amount_includes_processing_fee")
+    private Boolean amountIncludesProcessingFee;
+
+    @SerializedName("amount_includes_network_fee")
+    private Boolean amountIncludesNetworkFee;
+
     /** Creates a new instance of CoinWithdrawalParams. */
     public CoinWithdrawalParams() {}
 
@@ -126,7 +141,9 @@ public void setNetwork(final String network) {
      * Get chargedAmount.
      *
      * @return chargedAmount
+     * @deprecated
      */
+    @Deprecated
     public BigDecimal getChargedAmount() {
         return chargedAmount;
     }
@@ -135,7 +152,9 @@ public BigDecimal getChargedAmount() {
      * Set chargedAmount.
      *
      * @param chargedAmount chargedAmount
+     * @deprecated
      */
+    @Deprecated
     public void setChargedAmount(final BigDecimal chargedAmount) {
         this.chargedAmount = chargedAmount;
     }
@@ -144,7 +163,9 @@ public void setChargedAmount(final BigDecimal chargedAmount) {
      * Get chargedAmountToSend.
      *
      * @return chargedAmountToSend
+     * @deprecated
      */
+    @Deprecated
     public BigDecimal getChargedAmountToSend() {
         return chargedAmountToSend;
     }
@@ -153,7 +174,9 @@ public BigDecimal getChargedAmountToSend() {
      * Set chargedAmountToSend.
      *
      * @param chargedAmountToSend chargedAmountToSend
+     * @deprecated
      */
+    @Deprecated
     public void setChargedAmountToSend(final BigDecimal chargedAmountToSend) {
         this.chargedAmountToSend = chargedAmountToSend;
     }
@@ -162,7 +185,9 @@ public void setChargedAmountToSend(final BigDecimal chargedAmountToSend) {
      * Get receivedAmount.
      *
      * @return receivedAmount
+     * @deprecated
      */
+    @Deprecated
     public BigDecimal getReceivedAmount() {
         return receivedAmount;
     }
@@ -171,7 +196,9 @@ public BigDecimal getReceivedAmount() {
      * Set receivedAmount.
      *
      * @param receivedAmount receivedAmount
+     * @deprecated
      */
+    @Deprecated
     public void setReceivedAmount(final BigDecimal receivedAmount) {
         this.receivedAmount = receivedAmount;
     }
@@ -284,6 +311,78 @@ public void setBeneficiary(final Beneficiary beneficiary) {
         this.beneficiary = beneficiary;
     }
 
+    /**
+     * Get amount.
+     *
+     * @return amount
+     */
+    public BigDecimal getAmount() {
+        return amount;
+    }
+
+    /**
+     * Set amount.
+     *
+     * @param amount amount
+     */
+    public void setAmount(final BigDecimal amount) {
+        this.amount = amount;
+    }
+
+    /**
+     * Get amountCurrency.
+     *
+     * @return amountCurrency
+     */
+    public String getAmountCurrency() {
+        return amountCurrency;
+    }
+
+    /**
+     * Set amountCurrency.
+     *
+     * @param amountCurrency amountCurrency
+     */
+    public void setAmountCurrency(final String amountCurrency) {
+        this.amountCurrency = amountCurrency;
+    }
+
+    /**
+     * Get amountIncludesProcessingFee.
+     *
+     * @return amountIncludesProcessingFee
+     */
+    public Boolean getAmountIncludesProcessingFee() {
+        return amountIncludesProcessingFee;
+    }
+
+    /**
+     * Set amountIncludesProcessingFee.
+     *
+     * @param amountIncludesProcessingFee amountIncludesProcessingFee
+     */
+    public void setAmountIncludesProcessingFee(final Boolean amountIncludesProcessingFee) {
+        this.amountIncludesProcessingFee = amountIncludesProcessingFee;
+    }
+
+    /**
+     * Get amountIncludesNetworkFee.
+     *
+     * @return amountIncludesNetworkFee
+     */
+    public Boolean getAmountIncludesNetworkFee() {
+        return amountIncludesNetworkFee;
+    }
+
+    /**
+     * Set amountIncludesNetworkFee.
+     *
+     * @param amountIncludesNetworkFee amountIncludesNetworkFee
+     */
+    public void setAmountIncludesNetworkFee(final Boolean amountIncludesNetworkFee) {
+        this.amountIncludesNetworkFee = amountIncludesNetworkFee;
+    }
+
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();
@@ -300,7 +399,11 @@ public String toString() {
         sb.append("networkFeeLevel=").append(networkFeeLevel).append(", ");
         sb.append("forceCommit=").append(forceCommit).append(", ");
         sb.append("travelRuleCompliant=").append(travelRuleCompliant).append(", ");
-        sb.append("beneficiary=").append(beneficiary);
+        sb.append("beneficiary=").append(beneficiary).append(", ");
+        sb.append("amount=").append(amount).append(", ");
+        sb.append("amountCurrency=").append(amountCurrency).append(", ");
+        sb.append("amountIncludesProcessingFee=").append(amountIncludesProcessingFee).append(", ");
+        sb.append("amountIncludesNetworkFee=").append(amountIncludesNetworkFee);
         sb.append(")");
         return sb.toString();
     }
diff --git a/src/test/java/me/cryptopay/api/InvoicesTest.java b/src/test/java/me/cryptopay/api/InvoicesTest.java
index 9cbefe8..37f8948 100644
--- a/src/test/java/me/cryptopay/api/InvoicesTest.java
+++ b/src/test/java/me/cryptopay/api/InvoicesTest.java
@@ -95,11 +95,7 @@ public void createRecalculationTest() throws ApiException {
     public void createRefundTest() throws ApiException {
         UUID invoiceId = UUID.fromString("7e274430-e20f-4321-8748-20824287ae44");
 
-        InvoiceRefundParams invoiceRefundParams = new InvoiceRefundParams();
-        invoiceRefundParams.setAddress("0xf3532c1fd002665ec54d46a50787e0c69c76cd44");
-
-        InvoiceRefundResult result =
-                cryptopay.invoices().createRefund(invoiceId, invoiceRefundParams).execute();
+        InvoiceRefundResult result = cryptopay.invoices().createRefund(invoiceId).execute();
 
         assertThat(result.getData(), notNullValue());
     }
diff --git a/src/test/resources/mappings/api/invoices/create_refund.json b/src/test/resources/mappings/api/invoices/create_refund.json
index ae0a33a..cd9c092 100644
--- a/src/test/resources/mappings/api/invoices/create_refund.json
+++ b/src/test/resources/mappings/api/invoices/create_refund.json
@@ -13,9 +13,7 @@
         "contains": "Cryptopay Java"
       }
     },
-    "bodyPatterns": [{
-      "equalToJson": "{\"address\":\"0xf3532c1fd002665ec54d46a50787e0c69c76cd44\"}"
-    }]
+    "bodyPatterns": []
   },
   "response": {
     "status": 201,