diff --git a/src/main/java/com/podio/app/ApplicationMicro.java b/src/main/java/com/podio/app/ApplicationMicro.java
index de22ae7..1c842a2 100644
--- a/src/main/java/com/podio/app/ApplicationMicro.java
+++ b/src/main/java/com/podio/app/ApplicationMicro.java
@@ -1,8 +1,12 @@
 package com.podio.app;
 
+import java.io.Serializable;
+
 import org.codehaus.jackson.annotate.JsonProperty;
 
-public class ApplicationMicro {
+public class ApplicationMicro implements Serializable {
+
+	private static final long serialVersionUID = 1L;
 
 	/**
 	 * The id of the app
diff --git a/src/main/java/com/podio/comment/Comment.java b/src/main/java/com/podio/comment/Comment.java
index 20fc737..d782eb8 100644
--- a/src/main/java/com/podio/comment/Comment.java
+++ b/src/main/java/com/podio/comment/Comment.java
@@ -10,6 +10,8 @@
 
 public class Comment extends CreatedBase {
 
+	private static final long serialVersionUID = 1L;
+
 	/**
 	 * The id of the comment. Can be used to update and delete the comment
 	 */
diff --git a/src/main/java/com/podio/common/AuthorizationEntity.java b/src/main/java/com/podio/common/AuthorizationEntity.java
index f476b71..d931fb0 100644
--- a/src/main/java/com/podio/common/AuthorizationEntity.java
+++ b/src/main/java/com/podio/common/AuthorizationEntity.java
@@ -1,10 +1,13 @@
 package com.podio.common;
 
+import java.io.Serializable;
 import java.net.URL;
 
 import org.codehaus.jackson.annotate.JsonProperty;
 
-public class AuthorizationEntity {
+public class AuthorizationEntity implements Serializable {
+
+	private static final long serialVersionUID = 1L;
 
 	private AuthorizationEntityType type;
 
diff --git a/src/main/java/com/podio/common/AuthorizationInterface.java b/src/main/java/com/podio/common/AuthorizationInterface.java
index 72e7738..07dbd2f 100644
--- a/src/main/java/com/podio/common/AuthorizationInterface.java
+++ b/src/main/java/com/podio/common/AuthorizationInterface.java
@@ -1,8 +1,11 @@
 package com.podio.common;
 
+import java.io.Serializable;
 import java.net.URL;
 
-public class AuthorizationInterface {
+public class AuthorizationInterface implements Serializable {
+
+	private static final long serialVersionUID = 1L;
 
 	private int id;
 
diff --git a/src/main/java/com/podio/common/CreatedBase.java b/src/main/java/com/podio/common/CreatedBase.java
index cecd8c6..62a31ec 100644
--- a/src/main/java/com/podio/common/CreatedBase.java
+++ b/src/main/java/com/podio/common/CreatedBase.java
@@ -1,9 +1,13 @@
 package com.podio.common;
 
+import java.io.Serializable;
+
 import org.codehaus.jackson.annotate.JsonProperty;
 import org.joda.time.DateTime;
 
-public class CreatedBase {
+public class CreatedBase implements Serializable {
+
+	private static final long serialVersionUID = 1L;
 
 	/**
 	 * The entity who created the comment
diff --git a/src/main/java/com/podio/contact/ProfileBase.java b/src/main/java/com/podio/contact/ProfileBase.java
index 6d5ede8..c71e492 100644
--- a/src/main/java/com/podio/contact/ProfileBase.java
+++ b/src/main/java/com/podio/contact/ProfileBase.java
@@ -1,8 +1,12 @@
 package com.podio.contact;
 
+import java.io.Serializable;
+
 import org.codehaus.jackson.annotate.JsonProperty;
 
-public class ProfileBase {
+public class ProfileBase implements Serializable {
+
+	private static final long serialVersionUID = 1L;
 
 	/**
 	 * The id of the profile
diff --git a/src/main/java/com/podio/contact/ProfileMini.java b/src/main/java/com/podio/contact/ProfileMini.java
index b279099..80cdf6b 100644
--- a/src/main/java/com/podio/contact/ProfileMini.java
+++ b/src/main/java/com/podio/contact/ProfileMini.java
@@ -1,7 +1,10 @@
 package com.podio.contact;
 
+
 public class ProfileMini extends ProfileBase {
 
+	private static final long serialVersionUID = 1L;
+
 	private Integer avatar;
 
 	private String name;
diff --git a/src/main/java/com/podio/embed/Embed.java b/src/main/java/com/podio/embed/Embed.java
index 16a9606..32ebf05 100644
--- a/src/main/java/com/podio/embed/Embed.java
+++ b/src/main/java/com/podio/embed/Embed.java
@@ -1,5 +1,6 @@
 package com.podio.embed;
 
+import java.io.Serializable;
 import java.util.List;
 
 import org.codehaus.jackson.annotate.JsonProperty;
@@ -7,7 +8,9 @@
 
 import com.podio.file.File;
 
-public class Embed {
+public class Embed implements Serializable {
+
+	private static final long serialVersionUID = 1L;
 
 	/**
 	 * The id of the embed
@@ -74,6 +77,7 @@ public int getId() {
 		return id;
 	}
 
+	@JsonProperty("embed_id")
 	public void setId(int id) {
 		this.id = id;
 	}
diff --git a/src/main/java/com/podio/file/File.java b/src/main/java/com/podio/file/File.java
index 2ff5c2d..c72a832 100644
--- a/src/main/java/com/podio/file/File.java
+++ b/src/main/java/com/podio/file/File.java
@@ -10,6 +10,8 @@
 
 public class File extends CreatedBase {
 
+	private static final long serialVersionUID = 1L;
+
 	/**
 	 * The id of the file
 	 */
diff --git a/src/main/java/com/podio/item/FieldValuesView.java b/src/main/java/com/podio/item/FieldValuesView.java
index 297a849..543b554 100644
--- a/src/main/java/com/podio/item/FieldValuesView.java
+++ b/src/main/java/com/podio/item/FieldValuesView.java
@@ -1,5 +1,6 @@
 package com.podio.item;
 
+import java.io.Serializable;
 import java.util.List;
 import java.util.Map;
 
@@ -7,7 +8,9 @@
 
 import com.podio.app.ApplicationFieldType;
 
-public class FieldValuesView {
+public class FieldValuesView implements Serializable {
+
+	private static final long serialVersionUID = 1L;
 
 	/**
 	 * The id of the field
diff --git a/src/main/java/com/podio/item/Item.java b/src/main/java/com/podio/item/Item.java
index 9799958..329b9bb 100644
--- a/src/main/java/com/podio/item/Item.java
+++ b/src/main/java/com/podio/item/Item.java
@@ -1,5 +1,6 @@
 package com.podio.item;
 
+import java.io.Serializable;
 import java.util.List;
 import java.util.Map;
 
@@ -13,7 +14,9 @@
 import com.podio.rating.RatingTypeKeyDeserializer;
 import com.podio.rating.RatingValuesMap;
 
-public class Item {
+public class Item implements Serializable {
+
+	private static final long serialVersionUID = 1L;
 
 	/**
 	 * The id of the item
diff --git a/src/main/java/com/podio/item/ItemRevision.java b/src/main/java/com/podio/item/ItemRevision.java
index d427b95..a23d9bf 100644
--- a/src/main/java/com/podio/item/ItemRevision.java
+++ b/src/main/java/com/podio/item/ItemRevision.java
@@ -6,6 +6,8 @@
 
 public class ItemRevision extends CreatedBase {
 
+	private static final long serialVersionUID = 1L;
+
 	/**
 	 * The revision number
 	 */
diff --git a/src/main/java/com/podio/rating/RatingValuesMap.java b/src/main/java/com/podio/rating/RatingValuesMap.java
index 71302eb..3c334b2 100644
--- a/src/main/java/com/podio/rating/RatingValuesMap.java
+++ b/src/main/java/com/podio/rating/RatingValuesMap.java
@@ -1,12 +1,15 @@
 package com.podio.rating;
 
+import java.io.Serializable;
 import java.util.HashMap;
 import java.util.Map;
 
 import org.codehaus.jackson.annotate.JsonAnySetter;
 
-public class RatingValuesMap {
+public class RatingValuesMap implements Serializable {
 
+	private static final long serialVersionUID = 1L;
+	
 	private final Map<RatingType, TypeRating> values = new HashMap<RatingType, TypeRating>();
 
 	public TypeRating get(RatingType type) {
diff --git a/src/main/java/com/podio/rating/TypeRating.java b/src/main/java/com/podio/rating/TypeRating.java
index 0aa72ed..ae1d922 100644
--- a/src/main/java/com/podio/rating/TypeRating.java
+++ b/src/main/java/com/podio/rating/TypeRating.java
@@ -1,10 +1,13 @@
 package com.podio.rating;
 
+import java.io.Serializable;
 import java.util.HashMap;
 import java.util.Map;
 
-public class TypeRating {
+public class TypeRating implements Serializable {
 
+	private static final long serialVersionUID = 1L;
+	
 	private Map<Integer, ValueRatings> counts = new HashMap<Integer, ValueRatings>();
 
 	private Float average;
diff --git a/src/main/java/com/podio/rating/ValueRatings.java b/src/main/java/com/podio/rating/ValueRatings.java
index 11cdc15..a34acfc 100644
--- a/src/main/java/com/podio/rating/ValueRatings.java
+++ b/src/main/java/com/podio/rating/ValueRatings.java
@@ -1,11 +1,14 @@
 package com.podio.rating;
 
+import java.io.Serializable;
 import java.util.List;
 
 import com.podio.contact.ProfileMini;
 
-public class ValueRatings {
+public class ValueRatings implements Serializable {
 
+	private static final long serialVersionUID = 1L;
+	
 	private int total;
 
 	private List<ProfileMini> users;