diff --git a/dhp-workflows/dhp-dedup-openaire/src/main/java/eu/dnetlib/dhp/oa/dedup/SparkPropagateRelation.java b/dhp-workflows/dhp-dedup-openaire/src/main/java/eu/dnetlib/dhp/oa/dedup/SparkPropagateRelation.java
index 03e6674e4..ae5bf9252 100644
--- a/dhp-workflows/dhp-dedup-openaire/src/main/java/eu/dnetlib/dhp/oa/dedup/SparkPropagateRelation.java
+++ b/dhp-workflows/dhp-dedup-openaire/src/main/java/eu/dnetlib/dhp/oa/dedup/SparkPropagateRelation.java
@@ -12,8 +12,6 @@ import org.apache.spark.sql.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Joiner;
-
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.schema.common.ModelSupport;
 import eu.dnetlib.dhp.schema.oaf.DataInfo;
diff --git a/pom.xml b/pom.xml
index 5ece9aaf6..cec3dd75a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -315,7 +315,7 @@
 			<dependency>
 				<groupId>eu.dnetlib</groupId>
 				<artifactId>dnet-pace-core</artifactId>
-				<version>4.0.2</version>
+				<version>4.0.4</version>
 			</dependency>
 			<dependency>
 				<groupId>eu.dnetlib</groupId>