diff --git a/pom.xml b/pom.xml
index eb29ae54..342cfe63 100755
--- a/pom.xml
+++ b/pom.xml
@@ -144,7 +144,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.22.2</version>
 				<configuration>
 					<includes>
 						<include>**/*Tests.java</include>
@@ -155,7 +154,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.5.1</version>
 				<configuration>
 					<source>1.8</source>
 					<target>1.8</target>
@@ -166,7 +164,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -188,7 +185,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
@@ -201,7 +197,6 @@
 			<plugin>
 				<groupId>org.jacoco</groupId>
 				<artifactId>jacoco-maven-plugin</artifactId>
-				<version>0.8.6</version>
 				<executions>
 					<!--
 						Prepares the property pointing to the JaCoCo runtime agent which
diff --git a/spring-cloud-task-integration-tests/pom.xml b/spring-cloud-task-integration-tests/pom.xml
index 78ad9aeb..4fd39c41 100644
--- a/spring-cloud-task-integration-tests/pom.xml
+++ b/spring-cloud-task-integration-tests/pom.xml
@@ -125,7 +125,6 @@
 			<plugin>
 				<!--skip deploy (this is just a test module) -->
 				<artifactId>maven-deploy-plugin</artifactId>
-				<version>2.8.2</version>
 				<configuration>
 					<skip>true</skip>
 				</configuration>
diff --git a/spring-cloud-task-samples/batch-events/pom.xml b/spring-cloud-task-samples/batch-events/pom.xml
index 7765b085..9d6533f0 100644
--- a/spring-cloud-task-samples/batch-events/pom.xml
+++ b/spring-cloud-task-samples/batch-events/pom.xml
@@ -109,7 +109,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -122,7 +121,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
diff --git a/spring-cloud-task-samples/batch-job/pom.xml b/spring-cloud-task-samples/batch-job/pom.xml
index 69a8c42b..27245a6b 100644
--- a/spring-cloud-task-samples/batch-job/pom.xml
+++ b/spring-cloud-task-samples/batch-job/pom.xml
@@ -113,7 +113,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -126,7 +125,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
diff --git a/spring-cloud-task-samples/jpa-sample/pom.xml b/spring-cloud-task-samples/jpa-sample/pom.xml
index 7c2734f8..06c7dde2 100644
--- a/spring-cloud-task-samples/jpa-sample/pom.xml
+++ b/spring-cloud-task-samples/jpa-sample/pom.xml
@@ -112,7 +112,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -125,7 +124,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
diff --git a/spring-cloud-task-samples/multiple-datasources/pom.xml b/spring-cloud-task-samples/multiple-datasources/pom.xml
index b0f319c4..2eae724b 100644
--- a/spring-cloud-task-samples/multiple-datasources/pom.xml
+++ b/spring-cloud-task-samples/multiple-datasources/pom.xml
@@ -113,7 +113,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -126,7 +125,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
diff --git a/spring-cloud-task-samples/partitioned-batch-job/pom.xml b/spring-cloud-task-samples/partitioned-batch-job/pom.xml
index 7f31f9bb..dbfffbb6 100644
--- a/spring-cloud-task-samples/partitioned-batch-job/pom.xml
+++ b/spring-cloud-task-samples/partitioned-batch-job/pom.xml
@@ -86,7 +86,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -99,7 +98,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
@@ -127,7 +125,6 @@
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-surefire-plugin</artifactId>
-						<version>2.22.2</version>
 						<configuration>
 							<includes>
 								<include>**/TaskPartitionerTests.java</include>
@@ -147,7 +144,6 @@
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-surefire-plugin</artifactId>
-						<version>2.22.2</version>
 						<configuration>
 							<excludes>
 								<exclude>**/TaskPartitionerTests.java</exclude>
diff --git a/spring-cloud-task-samples/pom.xml b/spring-cloud-task-samples/pom.xml
index 598355e9..2a3172cd 100644
--- a/spring-cloud-task-samples/pom.xml
+++ b/spring-cloud-task-samples/pom.xml
@@ -49,7 +49,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -62,7 +61,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
@@ -75,7 +73,6 @@
 			<plugin>
 				<!--skip deploy (this is just a test module) -->
 				<artifactId>maven-deploy-plugin</artifactId>
-				<version>2.8.2</version>
 				<configuration>
 					<skip>true</skip>
 				</configuration>
diff --git a/spring-cloud-task-samples/single-step-batch-job/pom.xml b/spring-cloud-task-samples/single-step-batch-job/pom.xml
index 5f0f9508..3764314b 100644
--- a/spring-cloud-task-samples/single-step-batch-job/pom.xml
+++ b/spring-cloud-task-samples/single-step-batch-job/pom.xml
@@ -137,7 +137,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -150,7 +149,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
diff --git a/spring-cloud-task-samples/task-events/pom.xml b/spring-cloud-task-samples/task-events/pom.xml
index 5ab58f09..a59c9b9b 100644
--- a/spring-cloud-task-samples/task-events/pom.xml
+++ b/spring-cloud-task-samples/task-events/pom.xml
@@ -69,7 +69,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -82,7 +81,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
diff --git a/spring-cloud-task-samples/taskprocessor/pom.xml b/spring-cloud-task-samples/taskprocessor/pom.xml
index 9fc6db7d..21af72b5 100644
--- a/spring-cloud-task-samples/taskprocessor/pom.xml
+++ b/spring-cloud-task-samples/taskprocessor/pom.xml
@@ -123,7 +123,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -136,7 +135,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
diff --git a/spring-cloud-task-samples/tasksink/pom.xml b/spring-cloud-task-samples/tasksink/pom.xml
index 0bfbc3f4..17457701 100644
--- a/spring-cloud-task-samples/tasksink/pom.xml
+++ b/spring-cloud-task-samples/tasksink/pom.xml
@@ -75,7 +75,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -88,7 +87,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
diff --git a/spring-cloud-task-samples/timestamp/pom.xml b/spring-cloud-task-samples/timestamp/pom.xml
index ec104386..0be70663 100644
--- a/spring-cloud-task-samples/timestamp/pom.xml
+++ b/spring-cloud-task-samples/timestamp/pom.xml
@@ -127,7 +127,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -140,7 +139,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>