diff --git a/pom.xml b/pom.xml
index bec11fa4..edcf48c1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -47,7 +47,7 @@
         <dependency>
             <groupId>org.json</groupId>
             <artifactId>json</artifactId>
-            <version>20230618</version>
+            <version>20231013</version>
         </dependency>
         <dependency>
             <groupId>com.google.protobuf</groupId>
@@ -220,7 +220,7 @@
                     <dependency>
                         <groupId>com.puppycrawl.tools</groupId>
                         <artifactId>checkstyle</artifactId>
-                        <version>10.12.1</version>
+                        <version>10.12.2</version>
                     </dependency>
                 </dependencies>
                 <executions>
diff --git a/src/main/java/com/thoughtworks/gauge/connection/StubImplementationCodeProcessor.java b/src/main/java/com/thoughtworks/gauge/connection/StubImplementationCodeProcessor.java
index d2f058e8..ae93ad44 100644
--- a/src/main/java/com/thoughtworks/gauge/connection/StubImplementationCodeProcessor.java
+++ b/src/main/java/com/thoughtworks/gauge/connection/StubImplementationCodeProcessor.java
@@ -124,14 +124,14 @@ private Messages.FileDiff implementInExistingClass(ProtocolStringList stubs, Fil
         return null;
     }
 
-    private static class MethodVisitor extends VoidVisitorAdapter {
+    private static final class MethodVisitor extends VoidVisitorAdapter {
         @Override
         public void visit(MethodDeclaration methodDeclaration, Object arg) {
             methodDeclarations.add(methodDeclaration);
         }
     }
 
-    private static class ClassVisitor extends VoidVisitorAdapter {
+    private static final class ClassVisitor extends VoidVisitorAdapter {
         @Override
         public void visit(ClassOrInterfaceDeclaration node, Object arg) {
             classRange = node.getRange().get();
diff --git a/src/main/java/com/thoughtworks/gauge/tag/TagMatcher.java b/src/main/java/com/thoughtworks/gauge/tag/TagMatcher.java
index 20d10877..4de952ff 100644
--- a/src/main/java/com/thoughtworks/gauge/tag/TagMatcher.java
+++ b/src/main/java/com/thoughtworks/gauge/tag/TagMatcher.java
@@ -14,7 +14,7 @@ public boolean isMatch(List<String> tags, Operator operator, List<String> allTag
         return new TagMatcherFactory().matcherFor(operator).isMatch(tags, allTags);
     }
 
-    private class TagMatcherFactory {
+    private static final class TagMatcherFactory {
         public SimpleTagMatcher matcherFor(Operator operator) {
             switch (operator) {
                 case OR: