diff --git a/dhp-common/pom.xml b/dhp-common/pom.xml
index a7a83821e7..6198bd81ee 100644
--- a/dhp-common/pom.xml
+++ b/dhp-common/pom.xml
@@ -52,6 +52,8 @@
 					</execution>
 				</executions>
 				<configuration>
+					<failOnMultipleScalaVersions>true</failOnMultipleScalaVersions>
+					<scalaCompatVersion>${scala.binary.version}</scalaCompatVersion>
 					<scalaVersion>${scala.version}</scalaVersion>
 				</configuration>
 			</plugin>
@@ -81,11 +83,11 @@
 
 		<dependency>
 			<groupId>org.apache.spark</groupId>
-			<artifactId>spark-core_2.11</artifactId>
+			<artifactId>spark-core_${scala.binary.version}</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.spark</groupId>
-			<artifactId>spark-sql_2.11</artifactId>
+			<artifactId>spark-sql_${scala.binary.version}</artifactId>
 		</dependency>
 
 		<dependency>
@@ -159,7 +161,7 @@
 
 		<dependency>
 			<groupId>eu.dnetlib.dhp</groupId>
-			<artifactId>dhp-schemas</artifactId>
+			<artifactId>${dhp-schemas.artifact}</artifactId>
 		</dependency>
 
 		<dependency>
diff --git a/dhp-pace-core/pom.xml b/dhp-pace-core/pom.xml
index 12174a5c5b..fd7f44fc94 100644
--- a/dhp-pace-core/pom.xml
+++ b/dhp-pace-core/pom.xml
@@ -20,7 +20,7 @@
 			<plugin>
 				<groupId>net.alchim31.maven</groupId>
 				<artifactId>scala-maven-plugin</artifactId>
-				<version>4.0.1</version>
+				<version>${net.alchim31.maven.version}</version>
 				<executions>
 					<execution>
 						<id>scala-compile-first</id>
@@ -39,8 +39,9 @@
 					</execution>
 				</executions>
 				<configuration>
+					<failOnMultipleScalaVersions>true</failOnMultipleScalaVersions>
+					<scalaCompatVersion>${scala.binary.version}</scalaCompatVersion>
 					<scalaVersion>${scala.version}</scalaVersion>
-					<addScalacArgs>-target:jvm-1.8</addScalacArgs>
 				</configuration>
 			</plugin>
 		</plugins>
@@ -68,7 +69,6 @@
 			<groupId>commons-io</groupId>
 			<artifactId>commons-io</artifactId>
 		</dependency>
-
 		<dependency>
 			<groupId>org.antlr</groupId>
 			<artifactId>stringtemplate</artifactId>
@@ -89,17 +89,22 @@
 			<groupId>org.apache.commons</groupId>
 			<artifactId>commons-math3</artifactId>
 		</dependency>
-
 		<dependency>
 			<groupId>com.jayway.jsonpath</groupId>
 			<artifactId>json-path</artifactId>
 		</dependency>
-
 		<dependency>
 			<groupId>com.ibm.icu</groupId>
 			<artifactId>icu4j</artifactId>
 		</dependency>
-
+		<dependency>
+			<groupId>org.apache.spark</groupId>
+			<artifactId>spark-core_${scala.binary.version}</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.spark</groupId>
+			<artifactId>spark-sql_${scala.binary.version}</artifactId>
+		</dependency>
 	</dependencies>
 
 </project>
diff --git a/dhp-pace-core/src/main/java/eu/dnetlib/pace/util/DiffPatchMatch.java b/dhp-pace-core/src/main/java/eu/dnetlib/pace/util/DiffPatchMatch.java
index 84d49bd5ca..12c96500e4 100644
--- a/dhp-pace-core/src/main/java/eu/dnetlib/pace/util/DiffPatchMatch.java
+++ b/dhp-pace-core/src/main/java/eu/dnetlib/pace/util/DiffPatchMatch.java
@@ -1,6 +1,24 @@
 
 package eu.dnetlib.pace.util;
 
+/*
+ * Diff Match and Patch
+ * Copyright 2018 The diff-match-patch Authors.
+ * https://github.com/google/diff-match-patch
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /*
  * Diff Match and Patch
  * Copyright 2018 The diff-match-patch Authors.
diff --git a/dhp-workflows/dhp-actionmanager/pom.xml b/dhp-workflows/dhp-actionmanager/pom.xml
index 29e1fab1ff..ce13502b6f 100644
--- a/dhp-workflows/dhp-actionmanager/pom.xml
+++ b/dhp-workflows/dhp-actionmanager/pom.xml
@@ -11,12 +11,12 @@
     <dependencies>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
 
         <dependency>
diff --git a/dhp-workflows/dhp-aggregation/pom.xml b/dhp-workflows/dhp-aggregation/pom.xml
index 53d349d2a1..108d25ba63 100644
--- a/dhp-workflows/dhp-aggregation/pom.xml
+++ b/dhp-workflows/dhp-aggregation/pom.xml
@@ -38,6 +38,8 @@
                     </execution>
                 </executions>
                 <configuration>
+                    <failOnMultipleScalaVersions>true</failOnMultipleScalaVersions>
+                    <scalaCompatVersion>${scala.binary.version}</scalaCompatVersion>
                     <scalaVersion>${scala.version}</scalaVersion>
                 </configuration>
             </plugin>
@@ -54,11 +56,11 @@
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
 
         <dependency>
@@ -75,6 +77,11 @@
             <groupId>dom4j</groupId>
             <artifactId>dom4j</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.scala-lang.modules</groupId>
+            <artifactId>scala-xml_${scala.binary.version}</artifactId>
+            <version>${scala-xml.version}</version>
+        </dependency>
 
         <dependency>
             <groupId>xml-apis</groupId>
diff --git a/dhp-workflows/dhp-blacklist/pom.xml b/dhp-workflows/dhp-blacklist/pom.xml
index 479a9e8c63..7ecc8b35d2 100644
--- a/dhp-workflows/dhp-blacklist/pom.xml
+++ b/dhp-workflows/dhp-blacklist/pom.xml
@@ -16,11 +16,11 @@
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
     </dependencies>
 
diff --git a/dhp-workflows/dhp-broker-events/pom.xml b/dhp-workflows/dhp-broker-events/pom.xml
index 01f1ea3211..322fc7e93d 100644
--- a/dhp-workflows/dhp-broker-events/pom.xml
+++ b/dhp-workflows/dhp-broker-events/pom.xml
@@ -18,11 +18,11 @@
 
 		<dependency>
 			<groupId>org.apache.spark</groupId>
-			<artifactId>spark-core_2.11</artifactId>
+			<artifactId>spark-core_${scala.binary.version}</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.spark</groupId>
-			<artifactId>spark-sql_2.11</artifactId>
+			<artifactId>spark-sql_${scala.binary.version}</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.elasticsearch</groupId>
diff --git a/dhp-workflows/dhp-dedup-openaire/pom.xml b/dhp-workflows/dhp-dedup-openaire/pom.xml
index af4511c3c8..a271efe8e4 100644
--- a/dhp-workflows/dhp-dedup-openaire/pom.xml
+++ b/dhp-workflows/dhp-dedup-openaire/pom.xml
@@ -13,7 +13,7 @@
     	     <plugin>
                 <groupId>net.alchim31.maven</groupId>
                 <artifactId>scala-maven-plugin</artifactId>
-                <version>4.0.1</version>
+                <version>${net.alchim31.maven.version}</version>
                 <executions>
                     <execution>
                         <id>scala-compile-first</id>
@@ -32,6 +32,8 @@
                     </execution>
                 </executions>
                 <configuration>
+                    <failOnMultipleScalaVersions>true</failOnMultipleScalaVersions>
+                    <scalaCompatVersion>${scala.binary.version}</scalaCompatVersion>
                     <scalaVersion>${scala.version}</scalaVersion>
                 </configuration>
             </plugin>
@@ -53,30 +55,35 @@
             <version>${project.version}</version>
         </dependency>
 
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+        </dependency>
+
         <dependency>
             <groupId>org.scala-lang.modules</groupId>
-            <artifactId>scala-java8-compat_2.11</artifactId>
+            <artifactId>scala-java8-compat_${scala.binary.version}</artifactId>
             <version>1.0.2</version>
         </dependency>
 
         <dependency>
             <groupId>org.scala-lang.modules</groupId>
-            <artifactId>scala-collection-compat_2.11</artifactId>
-            <version>2.8.0</version>
+            <artifactId>scala-collection-compat_${scala.binary.version}</artifactId>
+            <version>2.11.0</version>
         </dependency>
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-graphx_2.11</artifactId>
+            <artifactId>spark-graphx_${scala.binary.version}</artifactId>
         </dependency>
 
         <dependency>
diff --git a/dhp-workflows/dhp-doiboost/pom.xml b/dhp-workflows/dhp-doiboost/pom.xml
index 37accbc4f5..6e8911fbab 100644
--- a/dhp-workflows/dhp-doiboost/pom.xml
+++ b/dhp-workflows/dhp-doiboost/pom.xml
@@ -33,6 +33,8 @@
                     </execution>
                 </executions>
                 <configuration>
+                    <failOnMultipleScalaVersions>true</failOnMultipleScalaVersions>
+                    <scalaCompatVersion>${scala.binary.version}</scalaCompatVersion>
                     <scalaVersion>${scala.version}</scalaVersion>
                 </configuration>
             </plugin>
@@ -70,12 +72,12 @@
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
 
         <dependency>
diff --git a/dhp-workflows/dhp-enrichment/pom.xml b/dhp-workflows/dhp-enrichment/pom.xml
index 591cad252c..9698dee03c 100644
--- a/dhp-workflows/dhp-enrichment/pom.xml
+++ b/dhp-workflows/dhp-enrichment/pom.xml
@@ -12,11 +12,11 @@
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
 
         <dependency>
@@ -27,7 +27,7 @@
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-hive_2.11</artifactId>
+            <artifactId>spark-hive_${scala.binary.version}</artifactId>
             <scope>test</scope>
         </dependency>
 
diff --git a/dhp-workflows/dhp-graph-mapper/pom.xml b/dhp-workflows/dhp-graph-mapper/pom.xml
index f579a7d2bf..ef35951c00 100644
--- a/dhp-workflows/dhp-graph-mapper/pom.xml
+++ b/dhp-workflows/dhp-graph-mapper/pom.xml
@@ -14,7 +14,7 @@
             <plugin>
                 <groupId>net.alchim31.maven</groupId>
                 <artifactId>scala-maven-plugin</artifactId>
-                <version>4.0.1</version>
+                <version>${net.alchim31.maven.version}</version>
                 <executions>
                     <execution>
                         <id>scala-compile-first</id>
@@ -37,6 +37,8 @@
                         <arg>-Xmax-classfile-name</arg>
                         <arg>200</arg>
                     </args>
+                    <failOnMultipleScalaVersions>true</failOnMultipleScalaVersions>
+                    <scalaCompatVersion>${scala.binary.version}</scalaCompatVersion>
                     <scalaVersion>${scala.version}</scalaVersion>
                 </configuration>
             </plugin>
@@ -64,15 +66,15 @@
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-hive_2.11</artifactId>
+            <artifactId>spark-hive_${scala.binary.version}</artifactId>
             <scope>test</scope>
             <exclusions>
                 <exclusion>
@@ -125,7 +127,7 @@
         </dependency>
         <dependency>
             <groupId>org.json4s</groupId>
-            <artifactId>json4s-jackson_2.11</artifactId>
+            <artifactId>json4s-jackson_${scala.binary.version}</artifactId>
         </dependency>
 
 
diff --git a/dhp-workflows/dhp-graph-provision/pom.xml b/dhp-workflows/dhp-graph-provision/pom.xml
index 413cc8cdd6..e62fcdf198 100644
--- a/dhp-workflows/dhp-graph-provision/pom.xml
+++ b/dhp-workflows/dhp-graph-provision/pom.xml
@@ -14,7 +14,7 @@
             <plugin>
                 <groupId>net.alchim31.maven</groupId>
                 <artifactId>scala-maven-plugin</artifactId>
-                <version>4.0.1</version>
+                <version>${net.alchim31.maven.version}</version>
                 <executions>
                     <execution>
                         <id>scala-compile-first</id>
@@ -37,6 +37,8 @@
                         <arg>-Xmax-classfile-name</arg>
                         <arg>200</arg>
                     </args>
+                    <failOnMultipleScalaVersions>true</failOnMultipleScalaVersions>
+                    <scalaCompatVersion>${scala.binary.version}</scalaCompatVersion>
                     <scalaVersion>${scala.version}</scalaVersion>
                 </configuration>
             </plugin>
@@ -48,11 +50,11 @@
 
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>com.jayway.jsonpath</groupId>
diff --git a/dhp-workflows/dhp-stats-promote/pom.xml b/dhp-workflows/dhp-stats-promote/pom.xml
index ce3e739a5c..9e17a78dcb 100644
--- a/dhp-workflows/dhp-stats-promote/pom.xml
+++ b/dhp-workflows/dhp-stats-promote/pom.xml
@@ -10,11 +10,11 @@
     <dependencies>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
     </dependencies>
 	<build>
diff --git a/dhp-workflows/dhp-stats-update/pom.xml b/dhp-workflows/dhp-stats-update/pom.xml
index 2bc610c420..f491b58689 100644
--- a/dhp-workflows/dhp-stats-update/pom.xml
+++ b/dhp-workflows/dhp-stats-update/pom.xml
@@ -10,11 +10,11 @@
     <dependencies>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
     </dependencies>
 	<build>
diff --git a/dhp-workflows/dhp-usage-raw-data-update/pom.xml b/dhp-workflows/dhp-usage-raw-data-update/pom.xml
index 954c8bd39b..a9dbb09ae1 100644
--- a/dhp-workflows/dhp-usage-raw-data-update/pom.xml
+++ b/dhp-workflows/dhp-usage-raw-data-update/pom.xml
@@ -46,13 +46,11 @@
     <dependencies>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
-            <version>2.2.0</version>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
-            <version>2.4.5</version>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>com.googlecode.json-simple</groupId>
diff --git a/dhp-workflows/dhp-usage-stats-build/pom.xml b/dhp-workflows/dhp-usage-stats-build/pom.xml
index 54e18580b3..56aec73b78 100644
--- a/dhp-workflows/dhp-usage-stats-build/pom.xml
+++ b/dhp-workflows/dhp-usage-stats-build/pom.xml
@@ -46,13 +46,11 @@
     <dependencies>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-core_2.11</artifactId>
-            <version>2.2.0</version>
+            <artifactId>spark-core_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
-            <artifactId>spark-sql_2.11</artifactId>
-            <version>2.4.5</version>
+            <artifactId>spark-sql_${scala.binary.version}</artifactId>
         </dependency>
         <dependency>
             <groupId>com.googlecode.json-simple</groupId>
diff --git a/pom.xml b/pom.xml
index 0f365a79b8..c6b65e27ae 100644
--- a/pom.xml
+++ b/pom.xml
@@ -142,7 +142,7 @@
 		<dependencies>
 			<dependency>
 				<groupId>eu.dnetlib.dhp</groupId>
-				<artifactId>dhp-schemas</artifactId>
+				<artifactId>${dhp-schemas.artifact}</artifactId>
 				<version>${dhp-schemas.version}</version>
 			</dependency>
 			<dependency>
@@ -171,25 +171,25 @@
 			</dependency>
 			<dependency>
 				<groupId>org.apache.spark</groupId>
-				<artifactId>spark-core_2.11</artifactId>
+				<artifactId>spark-core_${scala.binary.version}</artifactId>
 				<version>${dhp.spark.version}</version>
 				<scope>provided</scope>
 			</dependency>
 			<dependency>
 				<groupId>org.apache.spark</groupId>
-				<artifactId>spark-sql_2.11</artifactId>
+				<artifactId>spark-sql_${scala.binary.version}</artifactId>
 				<version>${dhp.spark.version}</version>
 				<scope>provided</scope>
 			</dependency>
 			<dependency>
 				<groupId>org.apache.spark</groupId>
-				<artifactId>spark-graphx_2.11</artifactId>
+				<artifactId>spark-graphx_${scala.binary.version}</artifactId>
 				<version>${dhp.spark.version}</version>
 				<scope>provided</scope>
 			</dependency>
 			<dependency>
 				<groupId>org.apache.spark</groupId>
-				<artifactId>spark-hive_2.11</artifactId>
+				<artifactId>spark-hive_${scala.binary.version}</artifactId>
 				<version>${dhp.spark.version}</version>
 				<scope>test</scope>
 			</dependency>
@@ -295,7 +295,7 @@
 			<dependency>
 				<groupId>com.lucidworks.spark</groupId>
 				<artifactId>spark-solr</artifactId>
-				<version>3.6.0</version>
+				<version>${sparksolr.version}</version>
 				<exclusions>
 					<exclusion>
 						<artifactId>*</artifactId>
@@ -518,7 +518,7 @@
 
 			<dependency>
 				<groupId>org.json4s</groupId>
-				<artifactId>json4s-jackson_2.11</artifactId>
+				<artifactId>json4s-jackson_${scala.binary.version}</artifactId>
 				<version>${json4s.version}</version>
 			</dependency>
 
@@ -610,7 +610,11 @@
 		<testOutputDirectory>target/test-classes</testOutputDirectory>
 		<pluginManagement>
 			<plugins>
-
+				<plugin>
+					<groupId>org.apache.maven.plugins</groupId>
+					<artifactId>maven-plugin-plugin</artifactId>
+					<version>3.3</version>
+				</plugin>
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-project-info-reports-plugin</artifactId>
@@ -694,7 +698,7 @@
 				</plugin>
 				<plugin>
 					<groupId>org.antipathy</groupId>
-					<artifactId>mvn-scalafmt_2.11</artifactId>
+					<artifactId>mvn-scalafmt_${scala.binary.version}</artifactId>
 					<version>1.0.1640073709.733712b</version>
 					<dependencies>
 						<dependency>
@@ -751,7 +755,7 @@
 			</plugin>
 			<plugin>
 				<groupId>org.antipathy</groupId>
-				<artifactId>mvn-scalafmt_2.11</artifactId>
+				<artifactId>mvn-scalafmt_${scala.binary.version}</artifactId>
 				<configuration>
 					<configLocation>https://code-repo.d4science.org/D-Net/dnet-hadoop/raw/branch/beta/dhp-build/dhp-code-style/src/main/resources/scalafmt/scalafmt.conf</configLocation>
 					<skipTestSources>false</skipTestSources>
@@ -860,12 +864,16 @@
 		<dhp.cdh.version>cdh5.9.2</dhp.cdh.version>
 		<dhp.hadoop.version>2.6.0-${dhp.cdh.version}</dhp.hadoop.version>
 		<dhp.oozie.version>4.1.0-${dhp.cdh.version}</dhp.oozie.version>
+		<dhp-schemas.artifact>dhp-schemas</dhp-schemas.artifact>
+		<sparksolr.version>3.6.0</sparksolr.version>
 		<dhp.spark.version>2.4.0.cloudera2</dhp.spark.version>
 		<dhp.jackson.version>2.9.6</dhp.jackson.version>
 		<dhp.commons.lang.version>3.5</dhp.commons.lang.version>
 		<dhp.site.skip>true</dhp.site.skip>
 		<dhp.guava.version>11.0.2</dhp.guava.version>
 		<scala.version>2.11.12</scala.version>
+		<scala.binary.version>2.11</scala.binary.version>
+		<scala-xml.version>1.3.0</scala-xml.version>
 		<junit-jupiter.version>5.6.1</junit-jupiter.version>
 		<mockito-core.version>3.3.3</mockito-core.version>
 		<mongodb.driver.version>3.4.2</mongodb.driver.version>
@@ -889,4 +897,29 @@
 		<commons.logging.version>1.1.3</commons.logging.version>
 		<commons.collections.version>3.2.1</commons.collections.version>
 	</properties>
+
+	<!-- Build with scala 12 and Spark 3.4 -->
+	<profiles>
+		<profile>
+			<id>scala-2.12</id>
+			<properties>
+				<scala.binary.version>2.12</scala.binary.version>
+				<scala.version>2.12.18</scala.version>
+				<!-- scala-xml.version>2.1.0</scala-xml.version -->
+
+
+				<sparksolr.version>4.0.2</sparksolr.version>
+				<dhp.spark.version>3.4.1</dhp.spark.version>
+				<dhp.jackson.version>2.14.2</dhp.jackson.version>
+				<dhp.commons.lang.version>3.12.0</dhp.commons.lang.version>
+				<json4s.version>3.7.0-M11</json4s.version>
+				<net.alchim31.maven.version>4.8.1</net.alchim31.maven.version>
+
+				<!--
+				<dhp-schemas.artifact>dhp-schemas_${scala.binary.version}</dhp-schemas.artifact>
+				<dhp-schemas.version>3.17.2-SNAPSHOT</dhp-schemas.version>
+				 -->
+			</properties>
+		</profile>
+	</profiles>
 </project>
\ No newline at end of file