diff --git a/shippable.yml b/shippable.yml
new file mode 100644
index 00000000..3d623b40
--- /dev/null
+++ b/shippable.yml
@@ -0,0 +1,4 @@
+language: java
+ jdk:
+   - oraclejdk7
+   - openjdk6
\ No newline at end of file
diff --git a/src/main/java/com/kpelykh/docker/client/model/Ports.java b/src/main/java/com/kpelykh/docker/client/model/Ports.java
index fee9d5be..e012e0f1 100644
--- a/src/main/java/com/kpelykh/docker/client/model/Ports.java
+++ b/src/main/java/com/kpelykh/docker/client/model/Ports.java
@@ -18,7 +18,7 @@
  */
 @JsonDeserialize(using=Ports.Deserializer.class)
 public class Ports {
-    private final Map<String, Port> ports = new HashMap<>();
+    private final Map<String, Port> ports = new HashMap<String, Port>();
     private Port[] mapping;
 
     private Ports() { }