diff --git a/dependencymanager/test/src/test/java/org/apache/felix/dm/test/ServiceUpdateTest.java b/dependencymanager/test/src/test/java/org/apache/felix/dm/test/ServiceUpdateTest.java
new file mode 100644
index 0000000..7a52748
--- /dev/null
+++ b/dependencymanager/test/src/test/java/org/apache/felix/dm/test/ServiceUpdateTest.java
@@ -0,0 +1,257 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.felix.dm.test;
+
+import static org.ops4j.pax.exam.CoreOptions.mavenBundle;
+import static org.ops4j.pax.exam.CoreOptions.options;
+import static org.ops4j.pax.exam.CoreOptions.provision;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.Dictionary;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Properties;
+
+import junit.framework.Assert;
+
+import org.apache.felix.dm.Component;
+import org.apache.felix.dm.DependencyManager;
+import org.apache.felix.dm.ResourceHandler;
+import org.apache.felix.dm.ResourceUtil;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.ops4j.pax.exam.Option;
+import org.ops4j.pax.exam.junit.Configuration;
+import org.ops4j.pax.exam.junit.JUnit4TestRunner;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.Filter;
+import org.osgi.framework.InvalidSyntaxException;
+import org.osgi.framework.ServiceReference;
+
+@RunWith(JUnit4TestRunner.class)
+public class ServiceUpdateTest extends Base {
+    @Configuration
+    public static Option[] configuration() {
+        return options(
+            provision(
+                mavenBundle().groupId("org.osgi").artifactId("org.osgi.compendium").version("4.1.0"),
+                mavenBundle().groupId("org.apache.felix").artifactId("org.apache.felix.dependencymanager").versionAsInProject()
+            )
+        );
+    }    
+
+    @Test
+    public void testServiceUpdate(BundleContext context) throws Exception {
+        DependencyManager m = new DependencyManager(context);
+        // helper class that ensures certain steps get executed in sequence
+        Ensure e = new Ensure();
+        // create a resource provider
+        ResourceProvider provider = new ResourceProvider(e);
+        // activate it
+        m.add(m.createComponent()
+    		.setImplementation(new ServiceProvider(e))
+    		.add(m.createServiceDependency()
+    		    .setService(ServiceInterface.class)
+				.setRequired(true)
+				.setCallbacks("add", "change", "remove")
+			)
+		);
+        
+        m.add(m.createComponent()
+    		.setImplementation(provider)
+    		.add(m.createServiceDependency()
+    			.setService(ResourceHandler.class)
+    			.setCallbacks("add", "remove")
+			)
+		);
+        
+        // create a resource adapter for our single resource
+        // note that we can provide an actual implementation instance here because there will be only one
+        // adapter, normally you'd want to specify a Class here
+        CallbackInstance callbackInstance = new CallbackInstance(e);
+        Properties serviceProps = new Properties();
+        serviceProps.setProperty("number", "1");
+        Component component = m.createResourceAdapterService("(&(path=/path/to/*.txt)(host=localhost))", false, callbackInstance, "changed")
+            .setImplementation(new ResourceAdapter(e))
+            .setInterface(ServiceInterface.class.getName(), serviceProps)
+            .setCallbacks(callbackInstance, "init", "start", "stop", "destroy");
+        m.add(component);
+        // wait until the single resource is available
+        e.waitForStep(1, 5000);
+        // wait until the component gets the dependency injected
+        e.waitForStep(2, 5000);
+        // trigger a 'change' in our resource
+        provider.change();
+        // wait until the changed callback is invoked
+        e.waitForStep(3, 5000);        
+        // wait until the changed event arrived at the component
+        e.waitForStep(4, 5000);
+        System.out.println("Done!");
+     }
+    
+    static class ResourceAdapter implements ServiceInterface {
+        protected URL m_resource; // injected by reflection.
+        private Ensure m_ensure;
+        
+        ResourceAdapter(Ensure e) {
+            m_ensure = e;
+        }
+
+		public void invoke() {
+			// TODO Auto-generated method stub
+			
+		}
+    }
+    
+    static class ResourceProvider {
+        private volatile BundleContext m_context;
+        private final Ensure m_ensure;
+        private final Map m_handlers = new HashMap();
+        private URL[] m_resources;
+
+        public ResourceProvider(Ensure ensure) throws MalformedURLException {
+            m_ensure = ensure;
+            m_resources = new URL[] {
+                new URL("file://localhost/path/to/file1.txt")
+            };
+        }
+        
+        public void change() {
+            ResourceHandler[] handlers;
+            synchronized (m_handlers) {
+                handlers = (ResourceHandler[]) m_handlers.keySet().toArray(new ResourceHandler[m_handlers.size()]);
+            }
+            for (int i = 0; i < m_resources.length; i++) {
+                for (int j = 0; j < handlers.length; j++) {
+                    ResourceHandler handler = handlers[j];
+                    handler.changed(m_resources[i]);
+                }
+            }
+        }
+
+        public void add(ServiceReference ref, ResourceHandler handler) {
+            String filterString = (String) ref.getProperty("filter");
+            Filter filter = null;
+            if (filterString != null) {
+                try {
+                    filter = m_context.createFilter(filterString);
+                }
+                catch (InvalidSyntaxException e) {
+                    Assert.fail("Could not create filter for resource handler: " + e);
+                    return;
+                }
+            }
+            synchronized (m_handlers) {
+                m_handlers.put(handler, filter);
+            }
+            for (int i = 0; i < m_resources.length; i++) {
+                if (filter == null || filter.match(ResourceUtil.createProperties(m_resources[i]))) {
+                    handler.added(m_resources[i]);
+                }
+            }
+        }
+
+        public void remove(ServiceReference ref, ResourceHandler handler) {
+            Filter filter;
+            synchronized (m_handlers) {
+                filter = (Filter) m_handlers.remove(handler);
+            }
+            removeResources(handler, filter);
+        }
+
+        private void removeResources(ResourceHandler handler, Filter filter) {
+                for (int i = 0; i < m_resources.length; i++) {
+                    if (filter == null || filter.match(ResourceUtil.createProperties(m_resources[i]))) {
+                        handler.removed(m_resources[i]);
+                    }
+                }
+            }
+
+        public void destroy() {
+            Entry[] handlers;
+            synchronized (m_handlers) {
+                handlers = (Entry[]) m_handlers.entrySet().toArray(new Entry[m_handlers.size()]);
+            }
+            for (int i = 0; i < handlers.length; i++) {
+                removeResources((ResourceHandler) handlers[i].getKey(), (Filter) handlers[i].getValue());
+            }
+        }
+    }
+    
+    static interface ServiceInterface {
+        public void invoke();
+    }
+
+    static class ServiceProvider {
+        private final Ensure m_ensure;
+        public ServiceProvider(Ensure e) {
+            m_ensure = e;
+        }
+        void add(ServiceInterface i) {
+        	m_ensure.step(2);
+        }
+        void change(ServiceInterface i) {
+        	System.out.println("Change...");
+        	m_ensure.step(4);
+        }
+        void remove(ServiceInterface i) {
+        	System.out.println("Remove...");
+        }
+    }    
+    
+    static class CallbackInstance {
+    	private final Ensure m_ensure;
+    	public CallbackInstance(Ensure e) {
+    		m_ensure = e;
+    	}
+    	
+    	void init() {
+    		System.out.println("init");
+    	}
+    	void start() {
+    		System.out.println("start");
+    		m_ensure.step(1);
+    	}
+    	void stop() {
+    		System.out.println("stop");
+    	}
+    	void destroy() {
+    		System.out.println("destroy");
+    	}
+    	void changed(Component component) {
+    		System.out.println("resource changed");
+    		m_ensure.step(3);
+    		
+    		Properties newProps = new Properties();
+    		// update the component's service properties
+    		Dictionary dict = component.getServiceProperties();
+    		Enumeration e = dict.keys();
+    		while (e.hasMoreElements()) {
+    			String key = (String) e.nextElement();
+    			String value = (String) dict.get(key);
+    			newProps.setProperty(key, value);
+    		}
+    		newProps.setProperty("new-property", "2");
+    		component.getServiceRegistration().setProperties(newProps);
+    	}
+    }
+}