diff --git a/org.eclipse.lyo.testsuite.build/pom.xml b/org.eclipse.lyo.testsuite.build/pom.xml
index fb190df..80701ab 100644
--- a/org.eclipse.lyo.testsuite.build/pom.xml
+++ b/org.eclipse.lyo.testsuite.build/pom.xml
@@ -160,7 +160,7 @@
       <plugin>
         <groupId>com.diffplug.spotless</groupId>
         <artifactId>spotless-maven-plugin</artifactId>
-        <version>3.4.0</version>
+        <version>3.5.1</version>
       </plugin>
     </plugins>
   </build>
diff --git a/org.eclipse.lyo.testsuite.server/pom.xml b/org.eclipse.lyo.testsuite.server/pom.xml
index 5e4e01d..f5ddd72 100644
--- a/org.eclipse.lyo.testsuite.server/pom.xml
+++ b/org.eclipse.lyo.testsuite.server/pom.xml
@@ -189,7 +189,7 @@
       <plugin>
         <groupId>com.diffplug.spotless</groupId>
         <artifactId>spotless-maven-plugin</artifactId>
-        <version>3.4.0</version>
+        <version>3.5.1</version>
         <executions>
           <execution>
             <id>auto-style</id>
diff --git a/org.eclipse.lyo.testsuite.trs/pom.xml b/org.eclipse.lyo.testsuite.trs/pom.xml
index e6020f0..79dcbea 100644
--- a/org.eclipse.lyo.testsuite.trs/pom.xml
+++ b/org.eclipse.lyo.testsuite.trs/pom.xml
@@ -111,7 +111,7 @@
       <plugin>
         <groupId>com.diffplug.spotless</groupId>
         <artifactId>spotless-maven-plugin</artifactId>
-        <version>3.4.0</version>
+        <version>3.5.1</version>
         <configuration>
           <!-- optional: limit format enforcement to just the files changed by this feature branch -->
           <!--                    <ratchetFrom>origin/main</ratchetFrom>-->
@@ -159,7 +159,7 @@
           <plugin>
             <groupId>com.diffplug.spotless</groupId>
             <artifactId>spotless-maven-plugin</artifactId>
-            <version>3.4.0</version>
+            <version>3.5.1</version>
             <executions>
               <execution>
                 <id>auto-style</id>