diff --git a/theodolite-benchmarks/buildSrc/src/main/groovy/theodolite.java-conventions.gradle b/theodolite-benchmarks/buildSrc/src/main/groovy/theodolite.java-conventions.gradle
index 773872648edfd4b30218a99d307b6e7c45ed3470..5b0e2a8a1211653428b296b11b14c1531e40e46b 100644
--- a/theodolite-benchmarks/buildSrc/src/main/groovy/theodolite.java-conventions.gradle
+++ b/theodolite-benchmarks/buildSrc/src/main/groovy/theodolite.java-conventions.gradle
@@ -50,7 +50,7 @@ pmd {
   ruleSets = [] // Gradle requires to clean the rule sets first
   ruleSetFiles = files("$rootProject.projectDir/config/pmd.xml")
   ignoreFailures = false
-  toolVersion = "6.7.0"
+  toolVersion = "6.13.0"
 }
 
 checkstyle {
@@ -58,7 +58,7 @@ checkstyle {
   configFile = file("$rootProject.projectDir/config/checkstyle.xml")
   maxWarnings = 0
   ignoreFailures = false
-  toolVersion = "8.12"
+  toolVersion = "8.19"
 }
 
 spotbugs {
diff --git a/theodolite-benchmarks/flink-commons/src/main/java/theodolite/commons/flink/serialization/StatsSerializer.java b/theodolite-benchmarks/flink-commons/src/main/java/theodolite/commons/flink/serialization/StatsSerializer.java
index f1f9870fda73ccec0fc25c5c70665759ab07d893..fe74fbe4b9dcb6ce89d10131de1336bfff40a919 100644
--- a/theodolite-benchmarks/flink-commons/src/main/java/theodolite/commons/flink/serialization/StatsSerializer.java
+++ b/theodolite-benchmarks/flink-commons/src/main/java/theodolite/commons/flink/serialization/StatsSerializer.java
@@ -5,7 +5,6 @@ import com.esotericsoftware.kryo.Serializer;
 import com.esotericsoftware.kryo.io.Input;
 import com.esotericsoftware.kryo.io.Output;
 import com.google.common.math.Stats;
-
 import java.io.Serializable;
 
 /**
@@ -13,7 +12,7 @@ import java.io.Serializable;
  */
 public class StatsSerializer extends Serializer<Stats> implements Serializable {
 
-  private static final long serialVersionUID = -1276866176534267373L; //NOPMD
+  private static final long serialVersionUID = -1276866176534267373L; // NOPMD
 
   @Override
   public void write(final Kryo kryo, final Output output, final Stats object) {