diff --git a/jetty-gcloud/jetty-gcloud-session-manager/src/main/config/etc/sessions/gcloud/session-store.xml b/jetty-gcloud/jetty-gcloud-session-manager/src/main/config/etc/sessions/gcloud/session-store.xml
index a7c2dcb2cae..e82adf8a0ca 100644
--- a/jetty-gcloud/jetty-gcloud-session-manager/src/main/config/etc/sessions/gcloud/session-store.xml
+++ b/jetty-gcloud/jetty-gcloud-session-manager/src/main/config/etc/sessions/gcloud/session-store.xml
@@ -13,6 +13,7 @@
        <Set name="gracePeriodSec"><Property name="jetty.session.gracePeriod.seconds" default="3600" /></Set>
        <Set name="maxRetries"><Property name="jetty.session.gcloud.maxRetries" default="5"/></Set>
        <Set name="backoffMs"><Property name="jetty.session.gcloud.backoffMs" default="1000"/></Set>
+       <Set name="namespace"><Property name="jetty.session.gcloud.namespace" default=""/></Set>
        <Set name="entityDataModel">
           <New class="org.eclipse.jetty.gcloud.session.GCloudSessionDataStore$EntityDataModel">
               <Set name="kind">
diff --git a/jetty-gcloud/jetty-gcloud-session-manager/src/main/config/modules/session-store-gcloud.mod b/jetty-gcloud/jetty-gcloud-session-manager/src/main/config/modules/session-store-gcloud.mod
index 3d73cf9739c..7e8d0afcf73 100644
--- a/jetty-gcloud/jetty-gcloud-session-manager/src/main/config/modules/session-store-gcloud.mod
+++ b/jetty-gcloud/jetty-gcloud-session-manager/src/main/config/modules/session-store-gcloud.mod
@@ -92,6 +92,7 @@ http://www.apache.org/licenses/LICENSE-2.0.html
 ## GCloudDatastore Session config
 #jetty.session.gcloud.maxRetries=5
 #jetty.session.gcloud.backoffMs=1000
+#jetty.session.gcloud.namespace=
 #jetty.session.gcloud.model.kind=GCloudSession
 #jetty.session.gcloud.model.id=id
 #jetty.session.gcloud.model.contextPath=contextPath
diff --git a/jetty-gcloud/jetty-gcloud-session-manager/src/main/java/org/eclipse/jetty/gcloud/session/GCloudSessionDataStore.java b/jetty-gcloud/jetty-gcloud-session-manager/src/main/java/org/eclipse/jetty/gcloud/session/GCloudSessionDataStore.java
index 36af3f7b658..0a698e5cd11 100644
--- a/jetty-gcloud/jetty-gcloud-session-manager/src/main/java/org/eclipse/jetty/gcloud/session/GCloudSessionDataStore.java
+++ b/jetty-gcloud/jetty-gcloud-session-manager/src/main/java/org/eclipse/jetty/gcloud/session/GCloudSessionDataStore.java
@@ -72,6 +72,9 @@ public class GCloudSessionDataStore extends AbstractSessionDataStore
 
     protected boolean _dsProvided = false;
     protected EntityDataModel _model;
+
+
+    private String _namespace;
     
     
     
@@ -316,6 +319,15 @@ public class GCloudSessionDataStore extends AbstractSessionDataStore
         _backoff = ms;
     }
     
+    public void setNamespace (String namespace)
+    {
+        _namespace = namespace;
+    }
+    
+    public String getNamespace ()
+    {
+        return _namespace;
+    }
     
     public int getBackoffMs ()
     {
@@ -341,8 +353,13 @@ public class GCloudSessionDataStore extends AbstractSessionDataStore
     protected void doStart() throws Exception
     {
         if (!_dsProvided)
-            _datastore = DatastoreOptions.defaultInstance().service();
-        
+        {
+            if (!StringUtil.isBlank(getNamespace()))
+                _datastore = DatastoreOptions.builder().namespace(getNamespace()).build().service();
+            else
+                _datastore = DatastoreOptions.defaultInstance().service();
+        }
+
         if (_model == null)
             _model = new EntityDataModel();
 
diff --git a/jetty-gcloud/jetty-gcloud-session-manager/src/main/java/org/eclipse/jetty/gcloud/session/GCloudSessionDataStoreFactory.java b/jetty-gcloud/jetty-gcloud-session-manager/src/main/java/org/eclipse/jetty/gcloud/session/GCloudSessionDataStoreFactory.java
index 1979ddc9586..c54d927b63a 100644
--- a/jetty-gcloud/jetty-gcloud-session-manager/src/main/java/org/eclipse/jetty/gcloud/session/GCloudSessionDataStoreFactory.java
+++ b/jetty-gcloud/jetty-gcloud-session-manager/src/main/java/org/eclipse/jetty/gcloud/session/GCloudSessionDataStoreFactory.java
@@ -30,6 +30,7 @@ import org.eclipse.jetty.server.session.SessionHandler;
  */
 public class GCloudSessionDataStoreFactory extends AbstractSessionDataStoreFactory
 {
+    private String _namespace;
     private int _maxRetries;
     private int _backoffMs;
     private GCloudSessionDataStore.EntityDataModel _model;
@@ -66,6 +67,22 @@ public class GCloudSessionDataStoreFactory extends AbstractSessionDataStoreFacto
     }
 
     
+    /**
+     * @return the namespace
+     */
+    public String getNamespace()
+    {
+        return _namespace;
+    }
+
+    /**
+     * @param namespace the namespace to set
+     */
+    public void setNamespace(String namespace)
+    {
+        _namespace = namespace;
+    }
+
     /** 
      * @see org.eclipse.jetty.server.session.SessionDataStoreFactory#getSessionDataStore(org.eclipse.jetty.server.session.SessionHandler)
      */
@@ -76,6 +93,7 @@ public class GCloudSessionDataStoreFactory extends AbstractSessionDataStoreFacto
         ds.setBackoffMs(getBackoffMs());
         ds.setMaxRetries(getMaxRetries());
         ds.setGracePeriodSec(getGracePeriodSec());
+        ds.setNamespace(_namespace);
         return ds;
     }