diff --git a/cache/src/main/java/org/jclouds/karaf/cache/utils/CacheUtils.java b/cache/src/main/java/org/jclouds/karaf/cache/utils/CacheUtils.java
index 25d8c7d0..dd50c92a 100644
--- a/cache/src/main/java/org/jclouds/karaf/cache/utils/CacheUtils.java
+++ b/cache/src/main/java/org/jclouds/karaf/cache/utils/CacheUtils.java
@@ -69,7 +69,7 @@ public static <T> ServiceTracker createServiceCacheTracker(final BundleContext c
             @Override
             public Object addingService(ServiceReference reference) {
                 Object service = super.addingService(reference);
-                if (serviceToken.isAssignableFrom(service.getClass())) {
+                if (serviceToken.isSupertypeOf(service.getClass())) {
                     cacheManager.bindService((T) service);
                 }
                 return service;
@@ -77,7 +77,7 @@ public Object addingService(ServiceReference reference) {
 
             @Override
             public void removedService(ServiceReference reference, Object service) {
-                if (serviceToken.isAssignableFrom(service.getClass())) {
+                if (serviceToken.isSupertypeOf(service.getClass())) {
                     cacheManager.unbindService((T) service);
                 }
                 super.removedService(reference, service);
diff --git a/chef/services/src/main/java/org/jclouds/karaf/chef/services/Activator.java b/chef/services/src/main/java/org/jclouds/karaf/chef/services/Activator.java
index 8dc0a02f..ecb50ff2 100644
--- a/chef/services/src/main/java/org/jclouds/karaf/chef/services/Activator.java
+++ b/chef/services/src/main/java/org/jclouds/karaf/chef/services/Activator.java
@@ -54,7 +54,7 @@ public void start(final BundleContext context) throws Exception {
             @Override
             public Object addingService(ServiceReference reference) {
                 Object obj =  super.addingService(reference);
-                if (CHEF_TOKEN.isAssignableFrom(obj.getClass())) {
+                if (CHEF_TOKEN.isSupertypeOf(obj.getClass())) {
                     String serviceId =  String.valueOf(reference.getProperty(Constants.SERVICE_ID));
                     registerRecipeProviderForService(context, serviceId, (ApiContext<ChefApi>) obj);
                 }
diff --git a/commands/src/main/java/org/jclouds/karaf/commands/blobstore/BlobExistsCommand.java b/commands/src/main/java/org/jclouds/karaf/commands/blobstore/BlobExistsCommand.java
index 89f8f064..88bde9a1 100644
--- a/commands/src/main/java/org/jclouds/karaf/commands/blobstore/BlobExistsCommand.java
+++ b/commands/src/main/java/org/jclouds/karaf/commands/blobstore/BlobExistsCommand.java
@@ -19,22 +19,11 @@
 
 package org.jclouds.karaf.commands.blobstore;
 
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStream;
-
 import org.apache.felix.gogo.commands.Argument;
 import org.apache.felix.gogo.commands.Command;
-import org.apache.felix.gogo.commands.Option;
 import org.jclouds.blobstore.BlobStore;
 import org.jclouds.blobstore.KeyNotFoundException;
 
-import com.google.common.base.Charsets;
-import com.google.common.base.Strings;
-import com.google.common.io.CharStreams;
-import com.google.common.io.Files;
-import com.google.common.io.InputSupplier;
-
 @Command(scope = "jclouds", name = "blobstore-blob-exists", description = "Checks existence of blob on the blobstore")
 public class BlobExistsCommand extends BlobStoreCommandWithOptions {
 
diff --git a/commands/src/main/java/org/jclouds/karaf/commands/blobstore/BlobReadCommand.java b/commands/src/main/java/org/jclouds/karaf/commands/blobstore/BlobReadCommand.java
index 938bf127..68b21a2e 100644
--- a/commands/src/main/java/org/jclouds/karaf/commands/blobstore/BlobReadCommand.java
+++ b/commands/src/main/java/org/jclouds/karaf/commands/blobstore/BlobReadCommand.java
@@ -29,14 +29,10 @@
 import org.apache.felix.gogo.commands.CommandException;
 import org.apache.felix.gogo.commands.Option;
 import org.jclouds.blobstore.BlobStore;
-import org.jclouds.blobstore.KeyNotFoundException;
 
 import com.google.common.base.Charsets;
-import com.google.common.base.Strings;
 import com.google.common.io.CharStreams;
-import com.google.common.io.Closeables;
 import com.google.common.io.Files;
-import com.google.common.io.InputSupplier;
 
 @Command(scope = "jclouds", name = "blobstore-read", description = "Reads data from the blobstore")
 public class BlobReadCommand extends BlobStoreCommandWithOptions {
diff --git a/feature-labs/pom.xml b/feature-labs/pom.xml
index 4c1d2016..1026c3c8 100644
--- a/feature-labs/pom.xml
+++ b/feature-labs/pom.xml
@@ -103,7 +103,7 @@ limitations under the License.
                                 <descriptor>file:${project.build.directory}/feature/feature.xml</descriptor>
                             </descriptors>
                             <distribution>org.apache.karaf.features:framework</distribution>
-                            <javase>1.7</javase>
+                            <javase>1.8</javase>
                             <framework>
                                 <feature>framework</feature>
                             </framework>
diff --git a/feature/pom.xml b/feature/pom.xml
index 0c8ccb49..104d8a49 100644
--- a/feature/pom.xml
+++ b/feature/pom.xml
@@ -112,7 +112,7 @@ limitations under the License.
                                 <descriptor>file:${project.build.directory}/feature/feature.xml</descriptor>
                             </descriptors>
                             <distribution>org.apache.karaf.features:framework</distribution>
-                            <javase>1.7</javase>
+                            <javase>1.8</javase>
                             <framework>
                                 <feature>framework</feature>
                             </framework>
diff --git a/feature/src/main/feature/feature.xml b/feature/src/main/feature/feature.xml
index 86a8d5a7..b64f727a 100644
--- a/feature/src/main/feature/feature.xml
+++ b/feature/src/main/feature/feature.xml
@@ -72,6 +72,7 @@ limitations under the License.
         <bundle dependency='true'>mvn:org.apache.servicemix.bundles/org.apache.servicemix.bundles.jersey-core/${jersey.bundle.version}</bundle>
         <bundle dependency='true'>mvn:com.google.code.gson/gson/${gson.version}</bundle>
         <bundle>mvn:org.apache.jclouds/jclouds-core/${jclouds.version}</bundle>
+        <requirement>osgi.ee;filter:="(&amp;(osgi.ee=JavaSE)(!(version>=1.9)))"</requirement>
     </feature>
 
     <feature name='jclouds-blobstore' description='jclouds - blobstore' version='${project.version}'>
diff --git a/pom.xml b/pom.xml
index 768cd0ab..40a59539 100644
--- a/pom.xml
+++ b/pom.xml
@@ -149,8 +149,8 @@ limitations under the License.
         <artifactId>maven-compiler-plugin</artifactId>
         <version>${maven-compiler-plugin.version}</version>
         <configuration>
-          <source>1.6</source>
-          <target>1.6</target>
+          <source>${jdk.version}</source>
+          <target>${jdk.version}</target>
         </configuration>
       </plugin>
       <plugin>
@@ -183,14 +183,14 @@ limitations under the License.
   </modules>
 
   <properties>
-    <jdk.version>1.7</jdk.version>
+    <jdk.version>1.8</jdk.version>
     <aopalliance.bundle.version>1.0_5</aopalliance.bundle.version>
     <bcprov.version>1.51</bcprov.version>
     <easymock.version>3.0</easymock.version>
     <felix.configadmin.version>1.8.0</felix.configadmin.version>
     <groovy.version>2.4.4</groovy.version>
     <gson.version>2.5</gson.version>
-    <guava.version>18.0</guava.version>
+    <guava.version>21.0</guava.version>
     <guava.test.version>10.0</guava.test.version>
     <guice.version>3.0</guice.version>
     <httpclient.version>4.3.4</httpclient.version>
@@ -212,7 +212,7 @@ limitations under the License.
     <junit.version>4.8.2</junit.version>
     <jzlib.bundle.version>1.0.7_1</jzlib.bundle.version>
     <jzlib.version>1.0.7</jzlib.version>
-    <karaf.version>4.0.9</karaf.version>
+    <karaf.version>4.2.0</karaf.version> <!-- osgi version 6, java version supported 8 / 9 / 10 -->
     <net.oauth.bundle.version>20100527_1</net.oauth.bundle.version>
     <netty.bundle.version>3.5.9.Final</netty.bundle.version>
     <osgi.version>6.0.0</osgi.version>