diff --git a/src/main/java/co/nstant/in/cbor/builder/MapEntryBuilder.java b/src/main/java/co/nstant/in/cbor/builder/MapEntryBuilder.java
index 7b95ee1..419324f 100644
--- a/src/main/java/co/nstant/in/cbor/builder/MapEntryBuilder.java
+++ b/src/main/java/co/nstant/in/cbor/builder/MapEntryBuilder.java
@@ -1,6 +1,8 @@
 package co.nstant.in.cbor.builder;
 
+import co.nstant.in.cbor.model.Array;
 import co.nstant.in.cbor.model.DataItem;
+import co.nstant.in.cbor.model.Map;
 
 public class MapEntryBuilder<T extends MapBuilder<?>> extends AbstractBuilder<T> {
     private final DataItem key;
@@ -26,6 +28,18 @@ public T value(String value) {
         return put(key, convert(value));
     }
 
+    public ArrayBuilder<T> valueArray() {
+        Array nestedArray = new Array();
+        this.put(key, nestedArray);
+        return new ArrayBuilder<>(getParent(), nestedArray);
+    }
+
+    public MapBuilder<T> valueMap() {
+        Map nestedMap = new Map();
+        this.put(key, nestedMap);
+        return new MapBuilder<>(getParent(), nestedMap);
+    }
+
     private T put(DataItem key, DataItem value) {
         getParent().put(key, value);
         return getParent();
diff --git a/src/test/java/co/nstant/in/cbor/builder/MapBuilderTest.java b/src/test/java/co/nstant/in/cbor/builder/MapBuilderTest.java
index 953ce7e..cceaa54 100644
--- a/src/test/java/co/nstant/in/cbor/builder/MapBuilderTest.java
+++ b/src/test/java/co/nstant/in/cbor/builder/MapBuilderTest.java
@@ -52,6 +52,12 @@ public void testMapBuilder() {
                     .addKey("28").value(1.0f)
                     .addKey("29").value(1L)
                     .addKey("30").value("value")
+                    .addKey(31)
+                        .valueMap()
+                            .addKey(3111).value(3112)
+                            .addKey(3121).value(3122)
+                        .end()
+                    .addKey(34).valueArray().add(35).end()
                 .end()
                 .startMap()
                     .startArray(1).end()
@@ -61,7 +67,7 @@ public void testMapBuilder() {
         assertEquals(2, dataItems.size());
         assertTrue(dataItems.get(0) instanceof Map);
         Map map = (Map) dataItems.get(0);
-        assertEquals(31, map.getKeys().size());
+        assertEquals(33, map.getKeys().size());
     }
 
     @Test