diff --git a/README.adoc b/README.adoc
index ef8602c..6ff04e6 100644
--- a/README.adoc
+++ b/README.adoc
@@ -36,7 +36,7 @@ Declare a dependency on the `siren-core` JAR in your build tool:
 [source,groovy]
 ----
 dependencies {
-    compile 'org.unbrokendome.siren:siren-core:0.2.0'
+    compile 'org.unbroken-dome.siren:siren-core:0.2.0'
 }
 ----
 
@@ -45,7 +45,7 @@ dependencies {
 ----
 <dependencies>
     <dependency>
-        <groupId>org.unbrokendome.siren</groupId>
+        <groupId>org.unbroken-dome.siren</groupId>
         <artifactId>siren-core</artifactId>
         <version>0.2.0</version>
     </dependency>
@@ -162,8 +162,8 @@ plugins {
 }
 
 dependencies {
-    implementation 'org.unbrokendome.siren:siren-core:0.2.0'
-    apt 'org.unbrokendome.siren:siren-spring-ap:0.2.0'
+    implementation 'org.unbroken-dome.siren:siren-core:0.2.0'
+    apt 'org.unbroken-dome.siren:siren-spring-ap:0.2.0'
 }
 ----
 
@@ -236,7 +236,7 @@ plugins {
 }
 
 dependencies {
-    compile 'org.unbrokendome.siren:siren-core:0.2.0'
-    kapt 'org.unbrokendome.siren:siren-spring-ap:0.2.0'
+    compile 'org.unbroken-dome.siren:siren-core:0.2.0'
+    kapt 'org.unbroken-dome.siren:siren-spring-ap:0.2.0'
 }
 ----
diff --git a/siren-core/src/main/java/org/unbrokendome/siren/model/Action.java b/siren-core/src/main/java/org/unbrokendome/siren/model/Action.java
index 92cd8f8..e64d4b8 100644
--- a/siren-core/src/main/java/org/unbrokendome/siren/model/Action.java
+++ b/siren-core/src/main/java/org/unbrokendome/siren/model/Action.java
@@ -70,4 +70,18 @@ private boolean equals(Action other) {
     public int hashCode() {
         return Objects.hash(super.hashCode(), name, method, fields);
     }
+
+    @Override
+    public String toString() {
+        return "Action{" +
+                "name='" + name + '\'' +
+                ", method='" + method + '\'' +
+                ", fields=" + fields +
+                ", href='" + getHref() + '\'' +
+                ", type='" + getType() + '\'' +
+                ", classes=" + getClasses() +
+                ", title='" + getTitle() + '\'' +
+                ", customProperties=" + getCustomProperties() +
+                '}';
+    }
 }
diff --git a/siren-core/src/main/java/org/unbrokendome/siren/model/ActionField.java b/siren-core/src/main/java/org/unbrokendome/siren/model/ActionField.java
index a81a330..dec719b 100644
--- a/siren-core/src/main/java/org/unbrokendome/siren/model/ActionField.java
+++ b/siren-core/src/main/java/org/unbrokendome/siren/model/ActionField.java
@@ -115,4 +115,16 @@ private boolean equals(ActionField other) {
     public int hashCode() {
         return Objects.hash(super.hashCode(), name, type, value);
     }
+
+    @Override
+    public String toString() {
+        return "ActionField{" +
+                "name='" + name + '\'' +
+                ", type=" + type +
+                ", value=" + value +
+                ", classes=" + getClasses() +
+                ", title='" + getTitle() + '\'' +
+                ", customProperties=" + getCustomProperties() +
+                '}';
+    }
 }
diff --git a/siren-core/src/main/java/org/unbrokendome/siren/model/Element.java b/siren-core/src/main/java/org/unbrokendome/siren/model/Element.java
index f3c8116..e4ccef1 100644
--- a/siren-core/src/main/java/org/unbrokendome/siren/model/Element.java
+++ b/siren-core/src/main/java/org/unbrokendome/siren/model/Element.java
@@ -65,4 +65,13 @@ private boolean equals(Element other) {
     public int hashCode() {
         return Objects.hash(classes, title);
     }
+
+    @Override
+    public String toString() {
+        return "Element{" +
+                "classes=" + classes +
+                ", title='" + title + '\'' +
+                ", customProperties=" + customProperties +
+                '}';
+    }
 }
diff --git a/siren-core/src/main/java/org/unbrokendome/siren/model/EmbeddedEntity.java b/siren-core/src/main/java/org/unbrokendome/siren/model/EmbeddedEntity.java
index a730920..2b22b4e 100644
--- a/siren-core/src/main/java/org/unbrokendome/siren/model/EmbeddedEntity.java
+++ b/siren-core/src/main/java/org/unbrokendome/siren/model/EmbeddedEntity.java
@@ -49,4 +49,18 @@ private boolean equals(EmbeddedEntity other) {
     public int hashCode() {
         return Objects.hash(super.hashCode(), rel);
     }
+
+    @Override
+    public String toString() {
+        return "EmbeddedEntity{" +
+                "rel=" + rel +
+                ", properties=" + getProperties() +
+                ", entities=" + getEntities() +
+                ", links=" + getLinks() +
+                ", actions=" + getActions() +
+                ", classes=" + getClasses() +
+                ", title='" + getTitle() + '\'' +
+                ", customProperties=" + getCustomProperties() +
+                '}';
+    }
 }
diff --git a/siren-core/src/main/java/org/unbrokendome/siren/model/FullEntity.java b/siren-core/src/main/java/org/unbrokendome/siren/model/FullEntity.java
index 82f4e94..8f02d2e 100644
--- a/siren-core/src/main/java/org/unbrokendome/siren/model/FullEntity.java
+++ b/siren-core/src/main/java/org/unbrokendome/siren/model/FullEntity.java
@@ -84,4 +84,17 @@ public int hashCode() {
         return Objects.hash(super.hashCode(),
                 properties, entities, links, actions);
     }
+
+    @Override
+    public String toString() {
+        return "FullEntity{" +
+                "properties=" + properties +
+                ", entities=" + entities +
+                ", links=" + links +
+                ", actions=" + actions +
+                ", classes=" + getClasses() +
+                ", title='" + getTitle() + '\'' +
+                ", customProperties=" + getCustomProperties() +
+                '}';
+    }
 }
diff --git a/siren-core/src/main/java/org/unbrokendome/siren/model/Link.java b/siren-core/src/main/java/org/unbrokendome/siren/model/Link.java
index 68b6b9d..8d902d2 100644
--- a/siren-core/src/main/java/org/unbrokendome/siren/model/Link.java
+++ b/siren-core/src/main/java/org/unbrokendome/siren/model/Link.java
@@ -49,4 +49,16 @@ private boolean equals(Link other) {
     public int hashCode() {
         return Objects.hash(super.hashCode(), rel);
     }
+
+    @Override
+    public String toString() {
+        return "Link{" +
+                "rel=" + rel +
+                ", href='" + getHref() + '\'' +
+                ", type='" + getType() + '\'' +
+                ", classes=" + getClasses() +
+                ", title='" + getTitle() + '\'' +
+                ", customProperties=" + getCustomProperties() +
+                '}';
+    }
 }
diff --git a/siren-core/src/main/java/org/unbrokendome/siren/model/Reference.java b/siren-core/src/main/java/org/unbrokendome/siren/model/Reference.java
index 4c68a64..bb56d2f 100644
--- a/siren-core/src/main/java/org/unbrokendome/siren/model/Reference.java
+++ b/siren-core/src/main/java/org/unbrokendome/siren/model/Reference.java
@@ -58,4 +58,15 @@ private boolean equals(Reference other) {
     public int hashCode() {
         return Objects.hash(super.hashCode(), href, type);
     }
+
+    @Override
+    public String toString() {
+        return "Reference{" +
+                "href='" + href + '\'' +
+                ", type='" + type + '\'' +
+                ", classes=" + getClasses() +
+                ", title='" + getTitle() + '\'' +
+                ", customProperties=" + getCustomProperties() +
+                '}';
+    }
 }
diff --git a/siren-core/src/main/java/org/unbrokendome/siren/model/RootEntity.java b/siren-core/src/main/java/org/unbrokendome/siren/model/RootEntity.java
index eb7995e..b6eaf01 100644
--- a/siren-core/src/main/java/org/unbrokendome/siren/model/RootEntity.java
+++ b/siren-core/src/main/java/org/unbrokendome/siren/model/RootEntity.java
@@ -23,4 +23,17 @@ public RootEntity(@Nullable Object properties,
     public static RootEntityBuilder builder() {
         return new RootEntityBuilder();
     }
+
+    @Override
+    public String toString() {
+        return "RootEntity{" +
+                "properties=" + getProperties() +
+                ", entities=" + getEntities() +
+                ", links=" + getLinks() +
+                ", actions=" + getActions() +
+                ", classes=" + getClasses() +
+                ", title='" + getTitle() + '\'' +
+                ", customProperties=" + getCustomProperties() +
+                '}';
+    }
 }