diff --git a/dnet-dedup-test/pom.xml b/dnet-dedup-test/pom.xml
index 43a7c2b..900d214 100644
--- a/dnet-dedup-test/pom.xml
+++ b/dnet-dedup-test/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>eu.dnetlib</groupId>
         <artifactId>dnet-dedup</artifactId>
-        <version>3.0.1-SNAPSHOT</version>
+        <version>3.0.3-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/dnet-pace-core/pom.xml b/dnet-pace-core/pom.xml
index 51958c5..d0b4a15 100644
--- a/dnet-pace-core/pom.xml
+++ b/dnet-pace-core/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>eu.dnetlib</groupId>
 		<artifactId>dnet-dedup</artifactId>
-		<version>3.0.1-SNAPSHOT</version>
+		<version>3.0.3-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
 	</parent>
 
@@ -59,10 +59,17 @@
 			<groupId>org.reflections</groupId>
 			<artifactId>reflections</artifactId>
 		</dependency>
+
 		<dependency>
-			<groupId>org.apache.spark</groupId>
-			<artifactId>spark-core_2.11</artifactId>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-databind</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.codehaus.jackson</groupId>
+			<artifactId>jackson-mapper-asl</artifactId>
+		</dependency>
+
+
 	</dependencies>
 
 </project>
diff --git a/dnet-pace-core/src/main/java/eu/dnetlib/pace/common/AbstractPaceFunctions.java b/dnet-pace-core/src/main/java/eu/dnetlib/pace/common/AbstractPaceFunctions.java
index dde3218..3647b32 100644
--- a/dnet-pace-core/src/main/java/eu/dnetlib/pace/common/AbstractPaceFunctions.java
+++ b/dnet-pace-core/src/main/java/eu/dnetlib/pace/common/AbstractPaceFunctions.java
@@ -1,26 +1,22 @@
 package eu.dnetlib.pace.common;
 
-import java.text.Normalizer;
-import java.util.*;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import com.google.common.collect.Maps;
-import eu.dnetlib.pace.distance.algo.JaroWinklerNormalizedName;
-import org.apache.commons.collections.CollectionUtils;
-import org.apache.commons.io.IOUtils;
-import org.apache.commons.lang.StringUtils;
-
 import com.google.common.base.Joiner;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
-
 import eu.dnetlib.pace.clustering.NGramUtils;
+import eu.dnetlib.pace.distance.algo.JaroWinklerNormalizedName;
 import eu.dnetlib.pace.model.Field;
 import eu.dnetlib.pace.model.FieldList;
 import eu.dnetlib.pace.model.FieldListImpl;
-import org.apache.spark.util.CollectionsUtils;
+import org.apache.commons.collections.CollectionUtils;
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.lang.StringUtils;
+
+import java.text.Normalizer;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * Set of common functions
diff --git a/pom.xml b/pom.xml
index 90f3259..9047c59 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>eu.dnetlib</groupId>
     <artifactId>dnet-dedup</artifactId>
-    <version>3.0.1-SNAPSHOT</version>
+    <version>3.0.3-SNAPSHOT</version>
 
     <packaging>pom</packaging>
 
@@ -22,8 +22,8 @@
 
     <scm>
         <developerConnection>scm:git:https://github.com/dnet-team/dnet-dedup.git</developerConnection>
-      <tag>HEAD</tag>
-  </scm>
+        <tag>HEAD</tag>
+    </scm>
 
     <modules>
         <module>dnet-pace-core</module>
@@ -122,7 +122,18 @@
             <dependency>
                 <groupId>eu.dnetlib</groupId>
                 <artifactId>dnet-openaireplus-mapping-utils</artifactId>
-                <version>6.2.18-SNAPSHOT</version>
+                <version>6.2.18</version>
+            </dependency>
+
+            <dependency>
+                <groupId>com.fasterxml.jackson.core</groupId>
+                <artifactId>jackson-databind</artifactId>
+                <version>2.6.6</version>
+            </dependency>
+            <dependency>
+                <groupId>org.codehaus.jackson</groupId>
+                <artifactId>jackson-mapper-asl</artifactId>
+                <version>1.9.13</version>
             </dependency>
 
 
@@ -195,5 +206,7 @@
         <commons.logging.version>1.1.3</commons.logging.version>
 
         <junit.version>4.9</junit.version>
+
+        <maven.javadoc.failOnError>false</maven.javadoc.failOnError>
     </properties>
 </project>