tiny updates to POM.
diff --git a/pom.xml b/pom.xml
index 4778a33..2ed6b7e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -45,7 +45,7 @@
          and not work properly. So this will stay for the time being. 
   -->
   <prerequisites>
-    <maven>3.2.0</maven>
+    <maven>3.0</maven>
   </prerequisites>
   <licenses>
     <license>
@@ -94,15 +94,15 @@
   <properties>
 
     <!-- UNIQUE FOR THIS JAVA COMPONENT -->
-    <slf4j-api.version>1.7.27</slf4j-api.version>
-    <slf4j-simple.version>1.7.27</slf4j-simple.version>
+    <slf4j-api.version>1.7.30</slf4j-api.version>
+    <slf4j-simple.version>1.7.30</slf4j-simple.version>
     <protobuf-java.version>3.6.0</protobuf-java.version>
     <!-- Used for UTF8 testing -->
     <zero-allocation-hashing.version>0.8</zero-allocation-hashing.version>
     <!-- END:UNIQUE FOR THIS JAVA COMPONENT -->
 
     <!-- Test -->
-    <testng.version>6.14.3</testng.version>
+    <testng.version>7.3.0</testng.version>
     <!-- System-wide properties -->
     <argLine>-Xmx4g -Duser.language=en -Duser.country=US -Dfile.encoding=UTF-8</argLine>
     <charset.encoding>UTF-8</charset.encoding>
@@ -113,23 +113,23 @@
     <maven.compiler.source>${java.version}</maven.compiler.source>
     <maven.compiler.target>${java.version}</maven.compiler.target>
     <!-- org.codehaus.plexus used for strict profile testing-->
-    <plexus-compiler-javac-errorprone.version>2.8.5</plexus-compiler-javac-errorprone.version>
+    <plexus-compiler-javac-errorprone.version>2.8.8</plexus-compiler-javac-errorprone.version>
     <!--  Maven Plugins -->
-    <maven-assembly-plugin.version>3.1.1</maven-assembly-plugin.version>
+    <maven-assembly-plugin.version>3.3.0</maven-assembly-plugin.version>
     <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
     <maven-deploy-plugin.version>3.0.0-M1</maven-deploy-plugin.version>
     <maven-enforcer-plugin.version>3.0.0-M2</maven-enforcer-plugin.version>
     <maven-gpg-plugin.version>1.6</maven-gpg-plugin.version>
-    <maven-jar-plugin.version>3.1.2</maven-jar-plugin.version>
-    <maven-javadoc-plugin.version>3.1.1</maven-javadoc-plugin.version>
-    <maven-release-plugin.version>2.5.3</maven-release-plugin.version>
+    <maven-jar-plugin.version>3.2.0</maven-jar-plugin.version>
+    <maven-javadoc-plugin.version>3.2.0</maven-javadoc-plugin.version>
+    <maven-release-plugin.version>3.0.0-M1</maven-release-plugin.version>
     <maven-remote-resources-plugin.version>[1.0,)</maven-remote-resources-plugin.version>
-    <maven-source-plugin.version>3.1.0</maven-source-plugin.version>
-    <maven-surefire-plugin.version>3.0.0-M3</maven-surefire-plugin.version>
+    <maven-source-plugin.version>3.2.1</maven-source-plugin.version>
+    <maven-surefire-plugin.version>3.0.0-M5</maven-surefire-plugin.version>
     <!-- Apache Plugins -->
     <apache-rat-plugin.version>0.13</apache-rat-plugin.version>
     <!-- org.jacoco Maven Plugins -->
-    <jacoco-maven-plugin.version>0.8.4</jacoco-maven-plugin.version>
+    <jacoco-maven-plugin.version>0.8.6</jacoco-maven-plugin.version>
     <!-- org.eluder Maven Plugins -->
     <coveralls-maven-plugin.version>4.3.0</coveralls-maven-plugin.version>
     <!-- other -->