diff --git a/pom.xml b/pom.xml
index 81543b0..78a71a3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -32,7 +32,7 @@
   	<dependency>
   		<groupId>org.gcube.contentmanagement</groupId>
   		<artifactId>storage-manager-core</artifactId>
-  		<version>[3.0.0-SNAPSHOT, 4.0.0-SNAPSHOT)</version>
+  		<version>[4.0.0-SNAPSHOT, 5.0.0-SNAPSHOT)</version>
   	</dependency>
 <!--   	<dependency> -->
 <!--             <groupId>software.amazon.awssdk</groupId> -->
diff --git a/src/main/java/org/gcube/contentmanagement/blobstorage/transport/plugin/S3PluginManager.java b/src/main/java/org/gcube/contentmanagement/blobstorage/transport/plugin/S3PluginManager.java
index 9e87b7c..f164b76 100644
--- a/src/main/java/org/gcube/contentmanagement/blobstorage/transport/plugin/S3PluginManager.java
+++ b/src/main/java/org/gcube/contentmanagement/blobstorage/transport/plugin/S3PluginManager.java
@@ -45,6 +45,7 @@ public class S3PluginManager extends TransportManager {
 	private Region region;
 	private String token;
 	
+	
 
 	@Override
 	public String getName() {
@@ -61,11 +62,12 @@ public class S3PluginManager extends TransportManager {
 			String writeConcern, String readConcern, String token, String region) {
 		initBackend(server,user,pass, memoryType,dbNames, writeConcern, readConcern, token, region);
 	}
-
+	
+	
 	@Override
 	public void initBackend(String[] server, String accessKey, String secretAccessKey, MemoryType memoryType, String[] dbNames,
 			String writeConcern, String readConcern, String token, String region) {
-
+		this.memoryType=memoryType;
 		AwsSessionCredentials awsCreds =null;
 		if(!Objects.isNull(getToken()))
 			awsCreds = AwsSessionCredentials.create(accessKey, secretAccessKey, token);
@@ -212,6 +214,12 @@ public class S3PluginManager extends TransportManager {
 		s3.close();
 
 	}
+	
+	@Override
+	public void forceClose() {
+		s3.close();
+
+	}
 
 	@Override
 	public void setFileProperty(String remotePath, String propertyField, String propertyValue) {
@@ -243,5 +251,7 @@ public class S3PluginManager extends TransportManager {
 	}
 
 
+
+
 }