diff --git a/pom.xml b/pom.xml
index 68d35d7e2..833ba7391 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache</groupId>
         <artifactId>apache</artifactId>
-        <version>34</version>
+        <version>40</version>
     </parent>
 
     <groupId>org.apache.wayang</groupId>
@@ -551,7 +551,6 @@
                         <plugin>
                             <groupId>org.apache.maven.plugins</groupId>
                             <artifactId>maven-dependency-plugin</artifactId>
-                            <version>3.1.2</version>
                             <executions>
                                 <execution>
                                     <id>copy-dependencies</id>
@@ -854,7 +853,6 @@
                  <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-assembly-plugin</artifactId>
-                    <version>3.5.0</version>
                     <configuration>
                         <finalName>apache-${project.artifactId}-${project.version}</finalName>
                     </configuration>
@@ -863,7 +861,6 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-antrun-plugin</artifactId>
-                    <version>3.0.0</version>
                 </plugin>
 
 
@@ -871,7 +868,6 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-compiler-plugin</artifactId>
-                    <version>3.8.1</version>
                     <configuration>
                         <forceJavacCompilerUse>true</forceJavacCompilerUse>
                     </configuration>
@@ -880,7 +876,6 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-checkstyle-plugin</artifactId>
-                    <version>3.1.1</version>
                     <dependencies>
                         <dependency>
                             <groupId>com.puppycrawl.tools</groupId>
@@ -893,25 +888,21 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-dependency-plugin</artifactId>
-                    <version>3.1.2</version>
                 </plugin>
 
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-deploy-plugin</artifactId>
-                    <version>3.0.0-M1</version>
                 </plugin>
 
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-enforcer-plugin</artifactId>
-                    <version>3.0.0-M3</version>
                 </plugin>
 
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-failsafe-plugin</artifactId>
-                    <version>2.19.1</version>
                     <executions>
                         <execution>
                             <goals>
@@ -929,13 +920,11 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-jar-plugin</artifactId>
-                    <version>3.2.2</version>
                 </plugin>
 
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-javadoc-plugin</artifactId>
-                    <version>3.3.0</version>
                     <executions>
                         <execution>
                             <id>attach-javadocs</id>
@@ -955,7 +944,6 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-source-plugin</artifactId>
-                    <version>3.2.1</version>
                     <executions>
                         <execution>
                             <id>attach-sources</id>
@@ -969,7 +957,6 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-surefire-plugin</artifactId>
-                    <version>3.0.0</version>
                     <configuration>
                         <argLine>
                             --add-exports=java.base/sun.nio.ch=ALL-UNNAMED
@@ -1003,7 +990,6 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-site-plugin</artifactId>
-                    <version>3.7</version>
                     <configuration>
 
                     </configuration>
@@ -1046,7 +1032,6 @@
             <plugin>
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
-                <version>0.13</version>
                 <executions>
                     <execution>
                         <id>license-check</id>
@@ -1264,7 +1249,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
-                <version>3.0.0-M3</version>
                 <executions>
                     <execution>
                         <id>enforce-maven-version</id>
@@ -1339,7 +1323,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-release-plugin</artifactId>
-                <version>3.0.1</version>
 
                 <configuration>
                     <autoVersionSubmodules>true</autoVersionSubmodules>
diff --git a/wayang-assembly/pom.xml b/wayang-assembly/pom.xml
index 7fe5c8f40..b68dc778b 100644
--- a/wayang-assembly/pom.xml
+++ b/wayang-assembly/pom.xml
@@ -145,7 +145,6 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-assembly-plugin</artifactId>
-            <version>3.1.0</version>
             <executions>
               <execution>
                 <id>dist</id>
diff --git a/wayang-tests-integration/pom.xml b/wayang-tests-integration/pom.xml
index 66b8f0ef4..e4aad490c 100644
--- a/wayang-tests-integration/pom.xml
+++ b/wayang-tests-integration/pom.xml
@@ -219,7 +219,6 @@
         <plugins>
            <plugin>
             <artifactId>maven-resources-plugin</artifactId>
-            <version>3.0.2</version>
             <executions>
                 <execution>
                     <id>process-resources</id>
@@ -244,7 +243,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-failsafe-plugin</artifactId>
-                <version>2.22.2</version>
                 <configuration>
                     <argLine>
                         --add-exports=java.base/sun.nio.ch=ALL-UNNAMED
@@ -276,7 +274,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.0.0</version>
                 <configuration>
                     <argLine>
                         --add-exports=java.base/sun.nio.ch=ALL-UNNAMED