diff --git a/pom.xml b/pom.xml
index 24f8abf6..26c8c913 100644
--- a/pom.xml
+++ b/pom.xml
@@ -92,7 +92,7 @@
     <maven-pmd-plugin.version>3.26.0</maven-pmd-plugin.version>
     <pmd.version>7.7.0</pmd.version>
     <maven-checkstyle-plugin.version>3.6.0</maven-checkstyle-plugin.version>
-    <checkstyle.version>10.18.2</checkstyle.version>
+    <checkstyle.version>10.20.0</checkstyle.version>
     <spotbugs-maven-plugin.version>4.8.6.5</spotbugs-maven-plugin.version>
     <findsecbugs-plugin.version>1.13.0</findsecbugs-plugin.version>
     <jacoco-maven-plugin.version>0.8.12</jacoco-maven-plugin.version>
diff --git a/src/main/java/edu/hm/hafner/util/Ensure.java b/src/main/java/edu/hm/hafner/util/Ensure.java
index 0cd34bfe..8e35d47c 100644
--- a/src/main/java/edu/hm/hafner/util/Ensure.java
+++ b/src/main/java/edu/hm/hafner/util/Ensure.java
@@ -20,6 +20,7 @@
  * Note: the static methods provided by this class use a fluent interface, i.e., in order to verify an assertion a
  * method sequence needs to be called.
  * </p>
+ *
  * <p>
  *  Available checks:
  * </p>
diff --git a/src/test/java/edu/hm/hafner/util/ResourceTest.java b/src/test/java/edu/hm/hafner/util/ResourceTest.java
index 0ab3eedb..f690e5de 100644
--- a/src/test/java/edu/hm/hafner/util/ResourceTest.java
+++ b/src/test/java/edu/hm/hafner/util/ResourceTest.java
@@ -59,7 +59,8 @@ protected Path createTempFile() {
      * Reads all the bytes from a file. The method ensures that the file is closed when all bytes have been read or an
      * I/O error, or other runtime exception, is thrown.
      *
-     * <p> Note that this method is intended for simple cases where it is
+     * <p>
+     * Note that this method is intended for simple cases where it is
      * convenient to read all bytes into a byte array. It is not intended for reading in large files.
      * </p>
      *
@@ -85,7 +86,8 @@ protected byte[] readAllBytes(final String fileName) {
      * Reads all the bytes from a file. The method ensures that the file is closed when all bytes have been read or an
      * I/O error, or other runtime exception, is thrown.
      *
-     * <p> Note that this method is intended for simple cases where it is
+     * <p>
+     * Note that this method is intended for simple cases where it is
      * convenient to read all bytes into a byte array. It is not intended for reading in large files.
      * </p>
      *
@@ -113,6 +115,7 @@ private Path getPath(final String name) throws URISyntaxException {
     /**
      * Read all lines from the desired resource as a {@code Stream}, i.e. this method populates lazily as the stream is
      * consumed.
+     *
      * <p>
      * Bytes from the resource are decoded into characters using UTF-8 and the same line terminators as specified by
      * {@link Files#readAllLines(Path, Charset)} are supported.
@@ -131,6 +134,7 @@ protected Stream<String> asStream(final String fileName) {
     /**
      * Read all lines from the desired resource as a {@code Stream}, i.e. this method populates lazily as the stream is
      * consumed.
+     *
      * <p>
      * Bytes from the resource are decoded into characters using the specified charset and the same line terminators as
      * specified by {@link Files#readAllLines(Path, Charset)} are supported.