diff --git a/core/pom.xml b/core/pom.xml
index 2fdd3a9..5cab2e6 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -50,7 +50,7 @@
     <plugins>
       <plugin>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.6</version>
+        <version>2.9</version>
         <configuration>
           <configLocation>${basedir}/src/build/conf/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>          
diff --git a/extras/pom.xml b/extras/pom.xml
index dc10e3a..886c206 100644
--- a/extras/pom.xml
+++ b/extras/pom.xml
@@ -63,7 +63,7 @@
     <plugins>
       <plugin>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.6</version>
+        <version>2.9</version>
         <configuration>
           <configLocation>${basedir}/src/build/conf/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>
diff --git a/jdk16/pom.xml b/jdk16/pom.xml
index 6974cc0..516e6c1 100644
--- a/jdk16/pom.xml
+++ b/jdk16/pom.xml
@@ -59,7 +59,7 @@
     <plugins>
       <plugin>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.6</version>
+        <version>2.9</version>
         <configuration>
           <configLocation>${basedir}/src/build/conf/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>
diff --git a/swt/pom.xml b/swt/pom.xml
index 6a9dbc4..ab9fde2 100644
--- a/swt/pom.xml
+++ b/swt/pom.xml
@@ -73,7 +73,7 @@
     <plugins>
       <plugin>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.6</version>
+        <version>2.9</version>
         <configuration>
           <configLocation>${basedir}/src/build/conf/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>