diff --git a/aws-app-sync/pom.xml b/aws-app-sync/pom.xml
index 700ffad735..5ef150de01 100644
--- a/aws-app-sync/pom.xml
+++ b/aws-app-sync/pom.xml
@@ -46,7 +46,4 @@
         </plugins>
     </build>
 
-    <properties>
-        <java.version>1.8</java.version>
-    </properties>
 </project>
diff --git a/core-java-modules/core-java-exceptions-2/pom.xml b/core-java-modules/core-java-exceptions-2/pom.xml
index a53bf37b77..4497874640 100644
--- a/core-java-modules/core-java-exceptions-2/pom.xml
+++ b/core-java-modules/core-java-exceptions-2/pom.xml
@@ -33,7 +33,6 @@
     <url>http://maven.apache.org</url>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <commons.lang3.version>3.10</commons.lang3.version>
         <!-- testing -->
         <assertj-core.version>3.10.0</assertj-core.version>
diff --git a/performance-tests/pom.xml b/performance-tests/pom.xml
index 8c66794cfc..0dc38e56a4 100644
--- a/performance-tests/pom.xml
+++ b/performance-tests/pom.xml
@@ -164,8 +164,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-
         <!--
             JMH version to use with this project.
           -->
@@ -176,7 +174,6 @@
         <mapstruct-jdk8.version>1.2.0.Final</mapstruct-jdk8.version>
         <modelmapper.version>1.1.0</modelmapper.version>
         <jmapper.version>1.6.0.1</jmapper.version>
-        <java.version>1.8</java.version>
         <mapstruct-processor.version>1.2.0.Final</mapstruct-processor.version>
         <jmh-core.version>1.21</jmh-core.version>
         <jmh-generator.version>1.21</jmh-generator.version>
diff --git a/persistence-modules/hibernate-exceptions/pom.xml b/persistence-modules/hibernate-exceptions/pom.xml
index e5217e83bd..f7eee22960 100644
--- a/persistence-modules/hibernate-exceptions/pom.xml
+++ b/persistence-modules/hibernate-exceptions/pom.xml
@@ -33,7 +33,6 @@
     <properties>
         <hsqldb.version>2.4.0</hsqldb.version>
         <jaxb.version>2.3.0</jaxb.version>
-        <hibernate.version>5.3.7.Final</hibernate.version>
     </properties>
 
 </project>
diff --git a/persistence-modules/hibernate-libraries/pom.xml b/persistence-modules/hibernate-libraries/pom.xml
index ea2dda7e88..808c47133c 100644
--- a/persistence-modules/hibernate-libraries/pom.xml
+++ b/persistence-modules/hibernate-libraries/pom.xml
@@ -171,7 +171,6 @@
         <hibernate-types.version>2.9.7</hibernate-types.version>
         <hibernate.version>5.4.14.Final</hibernate.version>
         <jackson.version>2.10.3</jackson.version>
-        <java.version>1.8</java.version>
         <javassist.version>3.27.0-GA</javassist.version>
         <jaxb.version>2.3.1</jaxb.version>
         <log4jdbc.version>2.0.0</log4jdbc.version>
diff --git a/persistence-modules/hibernate-queries/pom.xml b/persistence-modules/hibernate-queries/pom.xml
index a439ded9df..06f7f42088 100644
--- a/persistence-modules/hibernate-queries/pom.xml
+++ b/persistence-modules/hibernate-queries/pom.xml
@@ -71,7 +71,6 @@
     </repositories>
 
     <properties>
-        <hibernate.version>5.3.7.Final</hibernate.version>
         <mysql.version>6.0.6</mysql.version>
         <mariaDB4j.version>2.2.3</mariaDB4j.version>
         <assertj-core.version>3.8.0</assertj-core.version>
diff --git a/persistence-modules/pom.xml b/persistence-modules/pom.xml
index efef4f2015..f1154f203b 100644
--- a/persistence-modules/pom.xml
+++ b/persistence-modules/pom.xml
@@ -78,4 +78,8 @@
         <module>spring-persistence-simple-2</module>
     </modules>
 
+    <properties>
+        <!-- persistence -->
+        <hibernate.version>5.2.17.Final</hibernate.version>
+    </properties>
 </project>
diff --git a/persistence-modules/r2dbc/pom.xml b/persistence-modules/r2dbc/pom.xml
index d0f53ba37c..2da81cba06 100644
--- a/persistence-modules/r2dbc/pom.xml
+++ b/persistence-modules/r2dbc/pom.xml
@@ -62,7 +62,6 @@
     </build>
 
     <properties>
-        <java.version>1.8</java.version>
         <r2dbc-h2.version>0.8.1.RELEASE</r2dbc-h2.version>
         <h2.version>1.4.200</h2.version>
     </properties>
diff --git a/persistence-modules/spring-boot-persistence/pom.xml b/persistence-modules/spring-boot-persistence/pom.xml
index cc26ff58d5..9e44a7b9c1 100644
--- a/persistence-modules/spring-boot-persistence/pom.xml
+++ b/persistence-modules/spring-boot-persistence/pom.xml
@@ -74,7 +74,6 @@
     </dependencies>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <mockito.version>2.23.0</mockito.version>
         <validation-api.version>2.0.1.Final</validation-api.version>
     </properties>
diff --git a/persistence-modules/spring-data-geode/pom.xml b/persistence-modules/spring-data-geode/pom.xml
index 557d09376a..07aa65463c 100644
--- a/persistence-modules/spring-data-geode/pom.xml
+++ b/persistence-modules/spring-data-geode/pom.xml
@@ -85,7 +85,6 @@
 
     <properties>
         <spring-boot-version>2.1.9.RELEASE</spring-boot-version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <start-class>com.baeldung.springdatageode.app.ClientCacheApp</start-class>
         <spring-geode-starter-version>1.1.1.RELEASE</spring-geode-starter-version>
         <spring.boot.starter.version>2.1.9.RELEASE</spring.boot.starter.version>
diff --git a/persistence-modules/spring-data-jpa-5/pom.xml b/persistence-modules/spring-data-jpa-5/pom.xml
index f09c83ab11..db58a16062 100644
--- a/persistence-modules/spring-data-jpa-5/pom.xml
+++ b/persistence-modules/spring-data-jpa-5/pom.xml
@@ -71,7 +71,6 @@
 
     <properties>
         <spring-boot-version>2.1.9.RELEASE</spring-boot-version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <start-class>com.baeldung.springdatageode.app.ClientCacheApp</start-class>
         <spring-geode-starter-version>1.1.1.RELEASE</spring-geode-starter-version>
         <spring.boot.starter.version>2.1.9.RELEASE</spring.boot.starter.version>
diff --git a/persistence-modules/spring-jpa/pom.xml b/persistence-modules/spring-jpa/pom.xml
index ef05269c92..410ed592b0 100644
--- a/persistence-modules/spring-jpa/pom.xml
+++ b/persistence-modules/spring-jpa/pom.xml
@@ -133,8 +133,6 @@
         <org.springframework.version>5.1.5.RELEASE</org.springframework.version>
         <javassist.version>3.21.0-GA</javassist.version>
 
-        <!-- persistence -->
-        <hibernate.version>5.2.17.Final</hibernate.version>
         <mysql-connector-java.version>6.0.6</mysql-connector-java.version>
         <spring-data-jpa.version>2.1.5.RELEASE</spring-data-jpa.version>
 
diff --git a/spf4j/spf4j-aspects-app/pom.xml b/spf4j/spf4j-aspects-app/pom.xml
index db6a18f26a..24a419233e 100644
--- a/spf4j/spf4j-aspects-app/pom.xml
+++ b/spf4j/spf4j-aspects-app/pom.xml
@@ -81,7 +81,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <spf4j.version>8.6.10</spf4j.version>
         <org.slf4j.version>1.7.21</org.slf4j.version>
         <compiler.plugin.version>3.8.0</compiler.plugin.version>
diff --git a/spf4j/spf4j-core-app/pom.xml b/spf4j/spf4j-core-app/pom.xml
index 48cbf4a1c9..280a59e0d9 100644
--- a/spf4j/spf4j-core-app/pom.xml
+++ b/spf4j/spf4j-core-app/pom.xml
@@ -81,7 +81,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <spf4j.version>8.6.10</spf4j.version>
         <org.slf4j.version>1.7.21</org.slf4j.version>
         <compiler.plugin.version>3.8.0</compiler.plugin.version>
diff --git a/spring-5-reactive-oauth/pom.xml b/spring-5-reactive-oauth/pom.xml
index e286e821b2..e9882a6d32 100644
--- a/spring-5-reactive-oauth/pom.xml
+++ b/spring-5-reactive-oauth/pom.xml
@@ -65,8 +65,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <spring-boot.version>2.1.0.RELEASE</spring-boot.version>
     </properties>
 
diff --git a/spring-activiti/pom.xml b/spring-activiti/pom.xml
index eef4d37ff8..4803827b45 100644
--- a/spring-activiti/pom.xml
+++ b/spring-activiti/pom.xml
@@ -56,8 +56,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <activiti.version>6.0.0</activiti.version>
     </properties>
 
diff --git a/spring-boot-modules/pom.xml b/spring-boot-modules/pom.xml
index fb648c1bcd..84f1f0e86c 100644
--- a/spring-boot-modules/pom.xml
+++ b/spring-boot-modules/pom.xml
@@ -108,5 +108,6 @@
 
     <properties>
         <junit-jupiter.version>5.6.2</junit-jupiter.version>
+        <commons-io.version>2.6</commons-io.version>
     </properties>
 </project>
diff --git a/spring-boot-modules/spring-boot-crud/pom.xml b/spring-boot-modules/spring-boot-crud/pom.xml
index c27afe3926..8ba7bab171 100644
--- a/spring-boot-modules/spring-boot-crud/pom.xml
+++ b/spring-boot-modules/spring-boot-crud/pom.xml
@@ -81,8 +81,4 @@
         </plugins>
     </build>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
 </project>
diff --git a/spring-boot-modules/spring-boot-runtime/pom.xml b/spring-boot-modules/spring-boot-runtime/pom.xml
index 6cbdefb140..d3966beb65 100644
--- a/spring-boot-modules/spring-boot-runtime/pom.xml
+++ b/spring-boot-modules/spring-boot-runtime/pom.xml
@@ -172,7 +172,6 @@
         <springcloud.version>2.0.2.RELEASE</springcloud.version>
         <httpclient.version>4.5.8</httpclient.version>
         <spring-boot-admin-starter-client.version>2.1.6</spring-boot-admin-starter-client.version>
-        <commons-io.version>2.6</commons-io.version>
     </properties>
 
 </project>
diff --git a/spring-boot-modules/spring-boot-security/pom.xml b/spring-boot-modules/spring-boot-security/pom.xml
index 026a9e411f..33b7cbfd74 100644
--- a/spring-boot-modules/spring-boot-security/pom.xml
+++ b/spring-boot-modules/spring-boot-security/pom.xml
@@ -86,9 +86,7 @@
 
     <properties>
         <start-class>com.baeldung.springbootsecurity.basic_auth.SpringBootSecurityApplication</start-class>
-        <commons-io.version>2.6</commons-io.version>
         <spring-security-oauth2.version>2.4.0.RELEASE</spring-security-oauth2.version>
-        <commons-io.version>2.6</commons-io.version>
         <spring-security-oauth2-autoconfigure.version>2.2.2.RELEASE</spring-security-oauth2-autoconfigure.version>
     </properties>
 
diff --git a/spring-boot-modules/spring-boot-vue/pom.xml b/spring-boot-modules/spring-boot-vue/pom.xml
index 5d285b7c1a..9973246115 100644
--- a/spring-boot-modules/spring-boot-vue/pom.xml
+++ b/spring-boot-modules/spring-boot-vue/pom.xml
@@ -45,9 +45,4 @@
         </plugins>
     </build>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    </properties>
-
 </project>
diff --git a/spring-cloud-data-flow/spring-cloud-data-flow-etl/customer-mongodb-sink/pom.xml b/spring-cloud-data-flow/spring-cloud-data-flow-etl/customer-mongodb-sink/pom.xml
index 43772505a4..f4557335d6 100644
--- a/spring-cloud-data-flow/spring-cloud-data-flow-etl/customer-mongodb-sink/pom.xml
+++ b/spring-cloud-data-flow/spring-cloud-data-flow-etl/customer-mongodb-sink/pom.xml
@@ -60,8 +60,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <spring-cloud.version>Hoxton.SR4</spring-cloud.version>
     </properties>
 
diff --git a/spring-cloud-data-flow/spring-cloud-data-flow-etl/customer-transform/pom.xml b/spring-cloud-data-flow/spring-cloud-data-flow-etl/customer-transform/pom.xml
index f0d18a1c4f..81f194c772 100644
--- a/spring-cloud-data-flow/spring-cloud-data-flow-etl/customer-transform/pom.xml
+++ b/spring-cloud-data-flow/spring-cloud-data-flow-etl/customer-transform/pom.xml
@@ -52,8 +52,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <spring-cloud.version>Hoxton.SR4</spring-cloud.version>
     </properties>
 
diff --git a/spring-cloud/spring-cloud-bootstrap/customer-service/pom.xml b/spring-cloud/spring-cloud-bootstrap/customer-service/pom.xml
index 35f8aceb8d..8fcf4adadb 100644
--- a/spring-cloud/spring-cloud-bootstrap/customer-service/pom.xml
+++ b/spring-cloud/spring-cloud-bootstrap/customer-service/pom.xml
@@ -76,9 +76,7 @@
     </build>
 
     <properties>
-        <java.version>1.8</java.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 </project>
diff --git a/spring-cloud/spring-cloud-bootstrap/order-service/pom.xml b/spring-cloud/spring-cloud-bootstrap/order-service/pom.xml
index b626c3b81b..a1c6c1c39f 100644
--- a/spring-cloud/spring-cloud-bootstrap/order-service/pom.xml
+++ b/spring-cloud/spring-cloud-bootstrap/order-service/pom.xml
@@ -117,7 +117,6 @@
         <structure-maven.version>0.0.2</structure-maven.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <orderservice.mainclass>com.baeldung.orderservice.OrderApplication</orderservice.mainclass>
     </properties>
 </project>
diff --git a/spring-cloud/spring-cloud-contract/pom.xml b/spring-cloud/spring-cloud-contract/pom.xml
index 2f868980db..f26f1d7e3b 100644
--- a/spring-cloud/spring-cloud-contract/pom.xml
+++ b/spring-cloud/spring-cloud-contract/pom.xml
@@ -53,8 +53,6 @@
     </dependencyManagement>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <spring-cloud.version>2.1.1.RELEASE</spring-cloud.version>
         <spring-boot.version>2.1.4.RELEASE</spring-boot.version>
     </properties>
diff --git a/spring-cloud/spring-cloud-functions/pom.xml b/spring-cloud/spring-cloud-functions/pom.xml
index 03510d0504..4654d70dd7 100644
--- a/spring-cloud/spring-cloud-functions/pom.xml
+++ b/spring-cloud/spring-cloud-functions/pom.xml
@@ -82,8 +82,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <spring-cloud-function.version>1.0.1.RELEASE</spring-cloud-function.version>
         <aws-lambda-events.version>2.0.2</aws-lambda-events.version>
         <aws-lambda-java-core.version>1.1.0</aws-lambda-java-core.version>
diff --git a/spring-cloud/spring-cloud-vault/pom.xml b/spring-cloud/spring-cloud-vault/pom.xml
index dbdbcb2c50..a5a29d9024 100644
--- a/spring-cloud/spring-cloud-vault/pom.xml
+++ b/spring-cloud/spring-cloud-vault/pom.xml
@@ -78,8 +78,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <spring-cloud.version>Greenwich.RELEASE</spring-cloud.version>
     </properties>
 
diff --git a/spring-cloud/spring-cloud-zuul/pom.xml b/spring-cloud/spring-cloud-zuul/pom.xml
index e0a63ae00b..140a1337b3 100644
--- a/spring-cloud/spring-cloud-zuul/pom.xml
+++ b/spring-cloud/spring-cloud-zuul/pom.xml
@@ -72,8 +72,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <spring-cloud.version>Hoxton.RELEASE</spring-cloud.version>
         <spring-boot.version>2.2.2.RELEASE</spring-boot.version>
     </properties>
diff --git a/spring-cloud/spring-cloud-zuul/spring-zuul-rate-limiting/pom.xml b/spring-cloud/spring-cloud-zuul/spring-zuul-rate-limiting/pom.xml
index 34f0e6b7ae..fd6d18fc09 100644
--- a/spring-cloud/spring-cloud-zuul/spring-zuul-rate-limiting/pom.xml
+++ b/spring-cloud/spring-cloud-zuul/spring-zuul-rate-limiting/pom.xml
@@ -48,8 +48,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <spring-cloud.version>Finchley.SR1</spring-cloud.version>
         <spring-boot.version>2.0.6.RELEASE</spring-boot.version>
         <rate.limit.version>2.2.0.RELEASE</rate.limit.version>
diff --git a/spring-data-rest/pom.xml b/spring-data-rest/pom.xml
index bb592c08d5..741d146fbf 100644
--- a/spring-data-rest/pom.xml
+++ b/spring-data-rest/pom.xml
@@ -88,7 +88,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <start-class>com.baeldung.books.SpringDataRestApplication</start-class>
         <maven.version>1.0</maven.version>
     </properties>
diff --git a/spring-integration/pom.xml b/spring-integration/pom.xml
index a985f55d89..11b2803095 100644
--- a/spring-integration/pom.xml
+++ b/spring-integration/pom.xml
@@ -117,7 +117,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <spring.version>5.0.13.RELEASE</spring.version>
         <spring-social.version>1.1.4.RELEASE</spring-social.version>
         <javax-mail.version>1.4.7</javax-mail.version>
diff --git a/spring-remoting/remoting-jms/remoting-jms-client/pom.xml b/spring-remoting/remoting-jms/remoting-jms-client/pom.xml
index d8b9701600..2f3f993b2e 100644
--- a/spring-remoting/remoting-jms/remoting-jms-client/pom.xml
+++ b/spring-remoting/remoting-jms/remoting-jms-client/pom.xml
@@ -30,8 +30,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/spring-remoting/remoting-jms/remoting-jms-server/pom.xml b/spring-remoting/remoting-jms/remoting-jms-server/pom.xml
index 5d6d63219d..53d95edcd7 100644
--- a/spring-remoting/remoting-jms/remoting-jms-server/pom.xml
+++ b/spring-remoting/remoting-jms/remoting-jms-server/pom.xml
@@ -30,8 +30,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/spring-remoting/remoting-rmi/remoting-rmi-server/pom.xml b/spring-remoting/remoting-rmi/remoting-rmi-server/pom.xml
index 94bdccd093..cb5eaa1031 100644
--- a/spring-remoting/remoting-rmi/remoting-rmi-server/pom.xml
+++ b/spring-remoting/remoting-rmi/remoting-rmi-server/pom.xml
@@ -30,8 +30,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/spring-roo/pom.xml b/spring-roo/pom.xml
index 448574ed19..a3680ade70 100644
--- a/spring-roo/pom.xml
+++ b/spring-roo/pom.xml
@@ -605,11 +605,9 @@
     <properties>
         <roo.version>2.0.0.RELEASE</roo.version>
         <java.product.version>8</java.product.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <aspectj.plugin.version>1.8</aspectj.plugin.version>
         <asciidoclet.version>1.5.4</asciidoclet.version>
         <spring-boot.version>2.1.7.RELEASE</spring-boot.version>
-        <java.version>1.8</java.version>
         <springlets.version>1.2.0.RELEASE</springlets.version>
         <tracee.version>1.1.2</tracee.version>
         <thymeleaf.version>3.0.0.RELEASE</thymeleaf.version>
diff --git a/spring-security-modules/spring-security-config/cors/pom.xml b/spring-security-modules/spring-security-config/cors/pom.xml
index f400527863..19ca7f5ccc 100644
--- a/spring-security-modules/spring-security-config/cors/pom.xml
+++ b/spring-security-modules/spring-security-config/cors/pom.xml
@@ -56,9 +56,4 @@
         </plugins>
     </build>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    </properties>
-
 </project>
diff --git a/spring-swagger-codegen/spring-openapi-generator-api-client/pom.xml b/spring-swagger-codegen/spring-openapi-generator-api-client/pom.xml
index 7f4a02eb0d..7c6de543ae 100644
--- a/spring-swagger-codegen/spring-openapi-generator-api-client/pom.xml
+++ b/spring-swagger-codegen/spring-openapi-generator-api-client/pom.xml
@@ -262,7 +262,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <swagger-annotations-version>1.5.22</swagger-annotations-version>
         <spring-web-version>4.3.9.RELEASE</spring-web-version>
         <jackson-version>2.10.1</jackson-version>
diff --git a/spring-vault/pom.xml b/spring-vault/pom.xml
index 40967e2894..a39c5575a9 100644
--- a/spring-vault/pom.xml
+++ b/spring-vault/pom.xml
@@ -38,7 +38,6 @@
     </dependencies>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <spring.vault.core.version>2.1.1.RELEASE</spring.vault.core.version>
     </properties>
 
diff --git a/testing-modules/easymock/pom.xml b/testing-modules/easymock/pom.xml
index 4146ae6df4..98458b724d 100644
--- a/testing-modules/easymock/pom.xml
+++ b/testing-modules/easymock/pom.xml
@@ -23,7 +23,6 @@
     </dependencies>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <easymock.version>4.0.2</easymock.version>
     </properties>
 
diff --git a/testing-modules/parallel-tests-junit/math-test-functions/pom.xml b/testing-modules/parallel-tests-junit/math-test-functions/pom.xml
index ba645d00ff..fb12803333 100644
--- a/testing-modules/parallel-tests-junit/math-test-functions/pom.xml
+++ b/testing-modules/parallel-tests-junit/math-test-functions/pom.xml
@@ -45,8 +45,4 @@
         </plugins>
     </build>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
 </project>
diff --git a/testing-modules/parallel-tests-junit/string-test-functions/pom.xml b/testing-modules/parallel-tests-junit/string-test-functions/pom.xml
index 984dd64ce4..313d82c23f 100644
--- a/testing-modules/parallel-tests-junit/string-test-functions/pom.xml
+++ b/testing-modules/parallel-tests-junit/string-test-functions/pom.xml
@@ -37,8 +37,4 @@
         </plugins>
     </build>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
 </project>
diff --git a/vaadin/pom.xml b/vaadin/pom.xml
index f8f709cef7..4814e70ae3 100644
--- a/vaadin/pom.xml
+++ b/vaadin/pom.xml
@@ -182,7 +182,6 @@
         <vaadin-client-compiled.version>8.8.5</vaadin-client-compiled.version>
         <vaadin-themes.version>8.8.5</vaadin-themes.version>
         <jetty.plugin.version>9.3.9.v20160517</jetty.plugin.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <vaadin.widgetset.mode>local</vaadin.widgetset.mode>