diff --git a/pom.xml b/pom.xml
index cca682a..bae705f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,10 +26,10 @@
 
 	<properties>
 		<webappDirectory>${project.basedir}/src/main/webapp/WEB-INF</webappDirectory>
-		<jackrabbit.version>2.20.2</jackrabbit.version>
+		<jackrabbit.version>2.21.13</jackrabbit.version>
 		<jackson.version>2.8.11</jackson.version>
 		<slf4j.version>1.7.4</slf4j.version>
-		<tika.version>2.5.0</tika.version>
+		<tika.version>2.6.0</tika.version>
 
 		<distroDirectory>${project.basedir}/distro</distroDirectory>
 		<description>REST web service for Jackrabbit</description>
@@ -48,12 +48,6 @@
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
-			<dependency>
-				<groupId>org.apache.tika</groupId>
-				<artifactId>tika-parsers</artifactId>
-				<version>2.5.0</version>
-				<type>pom</type>
-			</dependency>
 			<dependency>
 				<groupId>org.aspectj</groupId>
 				<artifactId>aspectjrt</artifactId>
@@ -165,11 +159,11 @@
 			<artifactId>jackrabbit-core</artifactId>
 			<version>${jackrabbit.version}</version>
 		</dependency>
-		<dependency>
+<!-- 		<dependency>
 			<groupId>org.apache.jackrabbit</groupId>
 			<artifactId>jackrabbit-jcr-server</artifactId>
 			<version>${jackrabbit.version}</version>
-		</dependency>
+		</dependency>  -->
 
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
@@ -194,12 +188,17 @@
 		<dependency>
 			<groupId>org.apache.tika</groupId>
 			<artifactId>tika-core</artifactId>
-			<version>2.5.0</version>
+			<version>${tika.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.tika</groupId>
+			<artifactId>tika-parsers-standard-package</artifactId>
+			<version>${tika.version}</version>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.tika</groupId>
 			<artifactId>tika-parser-microsoft-module</artifactId>
-			<version>2.5.0</version>
+			<version>${tika.version}</version>
 		</dependency>
 
 		<!-- jersey & weld -->
diff --git a/src/main/java/org/gcube/data/access/storagehub/RepositoryInitializerImpl.java b/src/main/java/org/gcube/data/access/storagehub/RepositoryInitializerImpl.java
index 82a7c63..776ce4d 100644
--- a/src/main/java/org/gcube/data/access/storagehub/RepositoryInitializerImpl.java
+++ b/src/main/java/org/gcube/data/access/storagehub/RepositoryInitializerImpl.java
@@ -37,8 +37,9 @@ public class RepositoryInitializerImpl implements RepositoryInitializer{
 			InitialContext context = new InitialContext();
 			Context environment = (Context) context.lookup("java:comp/env");
 			repository = (Repository) environment.lookup("jcr/repository");
-		}catch (Exception e) {
-			new RuntimeException("error initializing repository",e);
+		}catch (Throwable e) {
+			log.error("error initializing repository", e);
+			throw new RuntimeException("error initializing repository",e);
 		}
 	}
 
diff --git a/src/main/java/org/gcube/data/access/storagehub/handlers/plugins/StorageBackendHandler.java b/src/main/java/org/gcube/data/access/storagehub/handlers/plugins/StorageBackendHandler.java
index 91d41b8..2387c4b 100644
--- a/src/main/java/org/gcube/data/access/storagehub/handlers/plugins/StorageBackendHandler.java
+++ b/src/main/java/org/gcube/data/access/storagehub/handlers/plugins/StorageBackendHandler.java
@@ -38,7 +38,6 @@ public class StorageBackendHandler {
 					throw new RuntimeException("multiple storage backend with the same name");
 				}
 				storagebackendMap.put(connector.getName(), connector);
-				
 			}
 		else 
 			throw new RuntimeException("storage backend implementation not found");