diff --git a/pom.xml b/pom.xml
index c2d69d6df..7681dad3f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -55,7 +55,7 @@
     <pmd.skip>false</pmd.skip>
 
     <!-- Project Dependencies Configuration -->
-    <spotbugs.version>4.9.8</spotbugs.version>
+    <spotbugs.version>4.10.1</spotbugs.version>
     <commons.lang.version>3.20.0</commons.lang.version>
     <commons.io.version>2.22.0</commons.io.version>
     <byte-buddy.version>1.18.10-jdk5</byte-buddy.version>
diff --git a/src/main/java/edu/hm/hafner/util/CSharpNamespaceDetector.java b/src/main/java/edu/hm/hafner/util/CSharpNamespaceDetector.java
index f186db7a7..ce3dfe834 100644
--- a/src/main/java/edu/hm/hafner/util/CSharpNamespaceDetector.java
+++ b/src/main/java/edu/hm/hafner/util/CSharpNamespaceDetector.java
@@ -17,7 +17,7 @@ class CSharpNamespaceDetector extends PackageDetector {
     }
 
     @Override
-    public boolean accepts(final String fileName) {
+    boolean accepts(final String fileName) {
         return fileName.endsWith(".cs");
     }
 
diff --git a/src/main/java/edu/hm/hafner/util/JavaPackageDetector.java b/src/main/java/edu/hm/hafner/util/JavaPackageDetector.java
index 5ba821686..f7a44d2a9 100644
--- a/src/main/java/edu/hm/hafner/util/JavaPackageDetector.java
+++ b/src/main/java/edu/hm/hafner/util/JavaPackageDetector.java
@@ -1,9 +1,9 @@
 package edu.hm.hafner.util;
 
-import java.util.regex.Pattern;
-
 import edu.hm.hafner.util.PackageDetectorFactory.FileSystemFacade;
 
+import java.util.regex.Pattern;
+
 /**
  * Detects the package name of a Java file.
  *
@@ -23,7 +23,7 @@ Pattern getPattern() {
     }
 
     @Override
-    public boolean accepts(final String fileName) {
+    boolean accepts(final String fileName) {
         return fileName.endsWith(".java");
     }
 }
diff --git a/src/main/java/edu/hm/hafner/util/ResourceExtractor.java b/src/main/java/edu/hm/hafner/util/ResourceExtractor.java
index 379bb0696..ab012091b 100644
--- a/src/main/java/edu/hm/hafner/util/ResourceExtractor.java
+++ b/src/main/java/edu/hm/hafner/util/ResourceExtractor.java
@@ -1,5 +1,8 @@
 package edu.hm.hafner.util;
 
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.lang3.StringUtils;
+
 import java.io.File;
 import java.io.IOException;
 import java.io.UncheckedIOException;
@@ -15,9 +18,6 @@
 import java.util.jar.JarFile;
 import java.util.stream.Collectors;
 
-import org.apache.commons.io.IOUtils;
-import org.apache.commons.lang3.StringUtils;
-
 /**
  * A proxy for resources. Extracts a given collection of files from the classpath and copies them to a target path.
  *
@@ -117,7 +117,7 @@ private static class FolderExtractor extends Extractor {
         }
 
         @Override
-        public void extractFiles(final Path targetDirectory, final String... sources) {
+        void extractFiles(final Path targetDirectory, final String... sources) {
             try {
                 for (String source : sources) {
                     var targetFile = targetDirectory.resolve(source);
@@ -149,7 +149,7 @@ private static class JarExtractor extends Extractor {
         }
 
         @Override
-        public void extractFiles(final Path targetDirectory, final String... sources) {
+        void extractFiles(final Path targetDirectory, final String... sources) {
             Set<String> remaining = Arrays.stream(sources).collect(Collectors.toSet());
             try (var jar = new JarFile(getEntryPoint().toFile())) {
                 Enumeration<JarEntry> entries = jar.entries();