diff --git a/README.md b/README.md
index 9a60400..19144ad 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ We will try to stay in sync with CSSParser regarding the features in the future.
 
 [HtmlUnit@mastodon](https://fosstodon.org/@HtmlUnit) | [HtmlUnit@bsky](https://bsky.app/profile/htmlunit.bsky.social) | [HtmlUnit@Twitter](https://twitter.com/HtmlUnit)
 
-### Latest release Version 4.11.0 / March 23, 2025
+### Latest release Version 4.12.0 / May 17, 2025
 
 ## Get it!
 
@@ -30,7 +30,7 @@ Add to your `pom.xml`:
 <dependency>
     <groupId>org.htmlunit</groupId>
     <artifactId>htmlunit-cssparser</artifactId>
-    <version>4.11.0</version>
+    <version>4.12.0</version>
 </dependency>
 ```
 
@@ -39,7 +39,7 @@ Add to your `pom.xml`:
 Add to your `build.gradle`:
 
 ```groovy
-implementation group: 'org.htmlunit', name: 'htmlunit-cssparser', version: '4.11.0'
+implementation group: 'org.htmlunit', name: 'htmlunit-cssparser', version: '4.12.0'
 ```
 
 
@@ -55,7 +55,7 @@ If you use maven please add:
     <dependency>
         <groupId>org.htmlunit</groupId>
         <artifactId>htmlunit-cssparser</artifactId>
-        <version>4.12.0-SNAPSHOT</version>
+        <version>4.13.0-SNAPSHOT</version>
     </dependency>
 
 You have to add the sonatype snapshot repository to your pom `repositories` section also:
diff --git a/checkstyle.xml b/checkstyle.xml
index 4399fa8..0f2683b 100644
--- a/checkstyle.xml
+++ b/checkstyle.xml
@@ -134,7 +134,7 @@
             <property name="authorFormat" value="\S \S"/>
         </module>
         <module name="JavadocVariable">
-            <property name="scope" value="protected"/>
+            <property name="accessModifiers" value="protected"/>
         </module>
         <module name="JavadocStyle">
             <property name="scope" value="protected"/>
@@ -264,7 +264,6 @@
             <property name="tokens" value="VARIABLE_DEF,PARAMETER_DEF"/>
             <property name="validateEnhancedForLoopVariable" value="true"/>
         </module>
-        <module name="HiddenField"/>
         <module name="MissingOverride"/>
     </module>
 </module>
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index ea4ff78..ba01765 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.htmlunit</groupId>
     <artifactId>htmlunit-cssparser</artifactId>
-    <version>4.11.0</version>
+    <version>4.12.0</version>
     <name>HtmlUnit CSS Parser</name>
     <organization>
         <name>HtmlUnit</name>
@@ -20,7 +20,7 @@
         <maven.compiler.source>8</maven.compiler.source>
         <maven.compiler.target>8</maven.compiler.target>
 
-        <checkstyle.version>10.21.4</checkstyle.version>
+        <checkstyle.version>10.23.1</checkstyle.version>
         <dependencycheck.version>10.0.4</dependencycheck.version>
     </properties>
 
@@ -69,7 +69,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.5.2</version>
+                <version>3.5.3</version>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
@@ -328,7 +328,7 @@
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
-            <version>2.18.0</version>
+            <version>2.19.0</version>
             <scope>test</scope>
         </dependency>
     </dependencies>