diff --git a/pom.xml b/pom.xml
index 1f13a7d..8cfc8c3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -156,6 +156,13 @@
 			<artifactId>slf4j-api</artifactId>
 		</dependency>
 
+		<!-- Session expired checker -->
+		<dependency>
+			<groupId>org.gcube.portlets.widgets</groupId>
+			<artifactId>session-checker</artifactId>
+			<version>LATEST</version>
+		</dependency>
+
 	</dependencies>
 
 	<build>
diff --git a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/client/GCubeCkanDataCatalog.java b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/client/GCubeCkanDataCatalog.java
index 45727e6..5d19b70 100644
--- a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/client/GCubeCkanDataCatalog.java
+++ b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/client/GCubeCkanDataCatalog.java
@@ -3,6 +3,7 @@ package org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client;
 
 import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.view.CKanLeaveFrame;
 import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.view.GCubeCkanDataCatalogPanel;
+import org.gcube.portlets.widgets.sessionchecker.client.CheckSession;
 
 import com.google.gwt.core.client.EntryPoint;
 import com.google.gwt.core.client.GWT;
@@ -34,6 +35,9 @@ public class GCubeCkanDataCatalog implements EntryPoint {
 	 * This is the entry point method.
 	 */
 	public void onModuleLoad() {
+		
+		//polling for session expired check
+		CheckSession.getInstance().startPolling();
 
 		Window.addWindowClosingHandler(new Window.ClosingHandler() {
 
diff --git a/src/main/resources/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/GCubeCkanDataCatalog.gwt.xml b/src/main/resources/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/GCubeCkanDataCatalog.gwt.xml
index 8027926..edaee34 100644
--- a/src/main/resources/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/GCubeCkanDataCatalog.gwt.xml
+++ b/src/main/resources/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/GCubeCkanDataCatalog.gwt.xml
@@ -21,6 +21,8 @@
 	<inherits
 		name='org.gcube.portlets.widgets.ckandatapublisherwidget.CKanMetadataPublisher' />
 
+	<inherits name='org.gcube.portlets.widgets.sessionchecker.SessionChecker' />
+
 	<inherits name='org.gcube.portlets.user.gcubewidgets.WidgetFactory' />
 
 	<!-- Specify the paths for translatable code -->
diff --git a/src/main/webapp/WEB-INF/web.xml b/src/main/webapp/WEB-INF/web.xml
index 973b10a..6dee428 100644
--- a/src/main/webapp/WEB-INF/web.xml
+++ b/src/main/webapp/WEB-INF/web.xml
@@ -34,13 +34,16 @@
 		<servlet-class>org.gcube.portlets.gcubeckan.gcubeckandatacatalog.server.CkanLogout</servlet-class>
 	</servlet>
 
+	<servlet>
+		<servlet-name>checkServlet</servlet-name>
+		<servlet-class>org.gcube.portlets.widgets.sessionchecker.server.SessionCheckerServiceImpl</servlet-class>
+	</servlet>
 
 	<servlet>
 		<servlet-name>ckanpublisherservices</servlet-name>
 		<servlet-class>org.gcube.portlets.widgets.ckandatapublisherwidget.server.CKANPublisherServicesImpl</servlet-class>
 	</servlet>
 
-
 	<servlet-mapping>
 		<servlet-name>gcubeckandatacatalogservice</servlet-name>
 		<url-pattern>/gCubeCkanDataCatalog/ckandatacatalogue</url-pattern>
@@ -56,7 +59,10 @@
 		<url-pattern>/gCubeCkanDataCatalog/gcubeckanlogout</url-pattern>
 	</servlet-mapping>
 
-
+	<servlet-mapping>
+		<servlet-name>checkServlet</servlet-name>
+		<url-pattern>/gCubeCkanDataCatalog/checksession</url-pattern>
+	</servlet-mapping>
 
 	<!-- Default page to serve -->
 	<welcome-file-list>