diff --git a/README.md b/README.md
index bafaa92..ebc416a 100644
--- a/README.md
+++ b/README.md
@@ -9,14 +9,14 @@ Add this dependency to your project's POM:
 <dependency>
   <groupId>com.realexpayments.hpp.sdk</groupId>
   <artifactId>rxp-hpp-java</artifactId>
-  <version>1.3.1</version>
+  <version>1.3.2</version>
 </dependency>
 ```
 
 ### Gradle users
 Add this dependency to your project's build file:
 ```
-compile "com.realexpayments.hpp.sdk:rxp-hpp-java:1.3.1"
+compile "com.realexpayments.hpp.sdk:rxp-hpp-java:1.3.2"
 ```
 
 ## Usage
diff --git a/pom.xml b/pom.xml
index aa45ca3..2d832e0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.realexpayments.hpp.sdk</groupId>
 	<artifactId>rxp-hpp-java</artifactId>
-	<version>1.3.1</version>
+	<version>1.3.2</version>
 	<name>Realex Payments HPP Java SDK</name>
 	<description>The official Realex Payments HPP Java SDK</description>
 	<url>http://www.realexpayments.com</url>
diff --git a/src/main/java/com/realexpayments/hpp/sdk/domain/HppResponse.java b/src/main/java/com/realexpayments/hpp/sdk/domain/HppResponse.java
index f4b48d5..5323713 100644
--- a/src/main/java/com/realexpayments/hpp/sdk/domain/HppResponse.java
+++ b/src/main/java/com/realexpayments/hpp/sdk/domain/HppResponse.java
@@ -8,6 +8,8 @@
 
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.realexpayments.hpp.sdk.utils.GenerationUtils;
@@ -18,6 +20,7 @@
  * @author markstanford
  *
  */
+@JsonInclude(Include.NON_NULL)
 public class HppResponse {
 
 	/**