diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6d0a4c4..9ef58214 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,14 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres
 to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [5.6.0](https://github.com/unzerdev/java-sdk/compare/5.5.0..5.6.0)
+
+* Add Styling properties for v2 Paypage `com.unzer.payment.resources.PaypageV2`:
+    * `basketBackgroundColor`
+    * `paymentFormBackgroundColor`
+* Add prototypes for v2 Customer: `com.unzer.payment.CustomerV2`.
+* Add prototypes for v3 Basket: `com.unzer.payment.BasketV3`.
+
 ## [5.5.0](https://github.com/unzerdev/java-sdk/compare/5.4.0..5.5.0)
 
 ### Added
diff --git a/pom.xml b/pom.xml
index a5676a46..8e97f9b0 100755
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>com.unzer.payment</groupId>
     <artifactId>java-sdk</artifactId>
-    <version>5.5.0</version>
+    <version>5.6.0</version>
     <name>Unzer Java SDK</name>
     <description>Unzer SDK provides an easy way to use Unzer Payment API.</description>
     <url>https://docs.unzer.com/</url>
diff --git a/src/main/java/com/unzer/payment/BasketV3.java b/src/main/java/com/unzer/payment/BasketV3.java
index becf565e..49ce7306 100644
--- a/src/main/java/com/unzer/payment/BasketV3.java
+++ b/src/main/java/com/unzer/payment/BasketV3.java
@@ -1,5 +1,13 @@
 package com.unzer.payment;
 
+/**
+ * This is a prototype of the v3 Basket resource.
+ * <p>
+ * This class represents version 3 of Basket resource in the Unzer API.
+ * The version uses bearer authentication for API calls.
+ * Make sure to use the same Unzer instance to use the same JWT token across multiple calls.
+ * Also, the resource ID incorporates UUID and has a length of 42.
+ */
 public class BasketV3 extends Basket {
     @Override
     protected String getResourceUrl() {
diff --git a/src/main/java/com/unzer/payment/CustomerV2.java b/src/main/java/com/unzer/payment/CustomerV2.java
index 1d0bb8d4..7e07845a 100644
--- a/src/main/java/com/unzer/payment/CustomerV2.java
+++ b/src/main/java/com/unzer/payment/CustomerV2.java
@@ -1,8 +1,12 @@
 package com.unzer.payment;
 
 /**
- * Business object for Customer together with billingAddress.
- * firstname and lastname are mandatory to create a new Customer.
+ * This is a prototype of the v2 Customer resource.
+ *
+ * This class represents version 2 of Customer resource in the Unzer API.
+ * The version uses bearer authentication for API calls.
+ * Make sure to use the same Unzer instance to use the same JWT token across multiple calls.
+ * Also, the resource ID incorporates UUID and has a length of 42.
  */
 public class CustomerV2 extends Customer {
     public CustomerV2(String firstname, String lastname) {