diff --git a/dhp-common/pom.xml b/dhp-common/pom.xml
index c2f76cff7..bfec019af 100644
--- a/dhp-common/pom.xml
+++ b/dhp-common/pom.xml
@@ -70,10 +70,7 @@
 			<groupId>com.ibm.icu</groupId>
 			<artifactId>icu4j</artifactId>
 		</dependency>
-		<dependency>
-			<groupId>org.apache.hadoop</groupId>
-			<artifactId>hadoop-common</artifactId>
-		</dependency>
+
 		<dependency>
 			<groupId>com.github.sisyphsu</groupId>
 			<artifactId>dateparser</artifactId>
@@ -163,7 +160,7 @@
 
 		<dependency>
 			<groupId>eu.dnetlib.dhp</groupId>
-			<artifactId>${dhp-schemas.artifact}</artifactId>
+			<artifactId>dhp-schemas</artifactId>
 		</dependency>
 
 		<dependency>
@@ -172,4 +169,23 @@
 		</dependency>
 	</dependencies>
 
+	<!-- dependencies required on JDK9+ because J2EE has been removed -->
+	<profiles>
+		<profile>
+			<id>spark-34</id>
+			<dependencies>
+				<dependency>
+					<groupId>javax.xml.bind</groupId>
+					<artifactId>jaxb-api</artifactId>
+					<version>2.2.11</version>
+				</dependency>
+				<dependency>
+					<groupId>com.sun.xml.ws</groupId>
+					<artifactId>jaxws-ri</artifactId>
+					<version>2.3.3</version>
+					<type>pom</type>
+				</dependency>
+			</dependencies>
+		</profile>
+	</profiles>
 </project>
diff --git a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/OsfPreprintCollectorTest.java b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/OsfPreprintCollectorTest.java
index 90f4c7f25..0e64f8bab 100644
--- a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/OsfPreprintCollectorTest.java
+++ b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/OsfPreprintCollectorTest.java
@@ -39,8 +39,8 @@ public class OsfPreprintCollectorTest {
 	private final String resumptionType = "page";
 	private final String resumptionXpath = "/*/*[local-name()='links']/*[local-name()='next']";
 
-	private final String resultSizeParam = "";
-	private final String resultSizeValue = "";
+	private final String resultSizeParam = "page[size]";
+	private final String resultSizeValue = "100";
 
 	private final String resultFormatParam = "format";
 	private final String resultFormatValue = "json";
@@ -74,7 +74,7 @@ public class OsfPreprintCollectorTest {
 		final AtomicInteger i = new AtomicInteger(0);
 		final Stream<String> stream = this.rcp.collect(this.api, new AggregatorReport());
 
-		stream.limit(200).forEach(s -> {
+		stream.limit(2000).forEach(s -> {
 			Assertions.assertTrue(s.length() > 0);
 			i.incrementAndGet();
 			log.info(s);