diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index b5abb92..e6820aa 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -23,7 +23,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - name: Check out Git repository
+        uses: actions/checkout@v4
+
+      - name: Install Java and Maven
+        uses: actions/setup-java@v4
+        with:
+          java-version: 11
+          distribution: 'temurin'
 
       # TODO: cache dependencies (taking into accounts: Maven plugins, snapshots, etc.)
 
diff --git a/.gitignore b/.gitignore
index 0d70cbd..f49908f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,5 @@
 
 # gwt caches and compiled units #
 war/gwt_bree/
-gwt-unitCache/
\ No newline at end of file
+gwt-unitCache/
+.idea
\ No newline at end of file
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..13566b8
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/checkstyle-idea.xml b/.idea/checkstyle-idea.xml
new file mode 100644
index 0000000..8dbefe7
--- /dev/null
+++ b/.idea/checkstyle-idea.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CheckStyle-IDEA" serialisationVersion="2">
+    <checkstyleVersion>10.12.5</checkstyleVersion>
+    <scanScope>JavaOnly</scanScope>
+    <option name="thirdPartyClasspath" />
+    <option name="activeLocationIds" />
+    <option name="locations">
+      <list>
+        <ConfigurationLocation id="bundled-sun-checks" type="BUNDLED" scope="All" description="Sun Checks">(bundled)</ConfigurationLocation>
+        <ConfigurationLocation id="bundled-google-checks" type="BUNDLED" scope="All" description="Google Checks">(bundled)</ConfigurationLocation>
+      </list>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..69bc57f
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="gwt-editor" />
+        <module name="gwt-editor-j2cl-tests" />
+        <module name="gwt-editor-gwt2-tests" />
+      </profile>
+    </annotationProcessing>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
new file mode 100644
index 0000000..4360b43
--- /dev/null
+++ b/.idea/encodings.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/gwt-editor-gwt2-tests/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/gwt-editor-gwt2-tests/src/main/resources" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/gwt-editor-j2cl-tests/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/gwt-editor-j2cl-tests/src/main/resources" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/gwt-editor-processor/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/gwt-editor-processor/src/main/resources" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/gwt-editor/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/gwt-editor/src/main/resources" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
new file mode 100644
index 0000000..6e5b61d
--- /dev/null
+++ b/.idea/jarRepositories.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="RELEASES-MVN" />
+      <option name="name" value="RELEASES-MVN" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="https://repo.maven.apache.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="${vertispan.j2cl.repo.id}" />
+      <option name="name" value="${vertispan.j2cl.repo.name}" />
+      <option name="url" value="https://repo.vertispan.com/j2cl/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="PUBLIC" />
+      <option name="name" value="PUBLIC" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="sonatype-snapshots-repo" />
+      <option name="name" value="sonatype-snapshots-repo" />
+      <option name="url" value="https://oss.sonatype.org/content/repositories/snapshots" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..67e1e61
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK" />
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/gwt-editor-gwt2-tests/pom.xml b/gwt-editor-gwt2-tests/pom.xml
index 16049a6..9500e9b 100644
--- a/gwt-editor-gwt2-tests/pom.xml
+++ b/gwt-editor-gwt2-tests/pom.xml
@@ -16,21 +16,21 @@
     <description>Test cases for the GWT 2 tests</description>
 
     <properties>
-        <maven.gwt.plugin>1.0.0</maven.gwt.plugin>
+        <maven.gwt.plugin>1.1.0</maven.gwt.plugin>
 
-        <gwt.version>2.9.0</gwt.version>
+        <gwt.version>2.12.1</gwt.version>
         <junit.version>4.13.1</junit.version>
     </properties>
 
     <dependencies>
         <dependency>
-            <groupId>com.google.gwt</groupId>
+            <groupId>org.gwtproject</groupId>
             <artifactId>gwt-user</artifactId>
             <version>${gwt.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
-            <groupId>com.google.gwt</groupId>
+            <groupId>org.gwtproject</groupId>
             <artifactId>gwt-dev</artifactId>
             <version>${gwt.version}</version>
             <scope>test</scope>
diff --git a/gwt-editor-j2cl-tests/pom.xml b/gwt-editor-j2cl-tests/pom.xml
index 270bcb6..fc0b25f 100644
--- a/gwt-editor-j2cl-tests/pom.xml
+++ b/gwt-editor-j2cl-tests/pom.xml
@@ -16,12 +16,12 @@
   <url>https://github.com/gwtproject/gwt-editor</url>
 
   <properties>
-    <maven.j2cl.plugin>0.16-SNAPSHOT</maven.j2cl.plugin>
+    <maven.j2cl.plugin>0.22.0</maven.j2cl.plugin>
 
     <!-- CI -->
     <vertispan.j2cl.repo.url>https://repo.vertispan.com/j2cl/</vertispan.j2cl.repo.url>
 
-    <j2cl.version>0.8-SNAPSHOT</j2cl.version>
+    <j2cl.version>v20230718-1</j2cl.version>
   </properties>
 
   <dependencies>
@@ -65,41 +65,6 @@
         <groupId>com.vertispan.j2cl</groupId>
         <artifactId>j2cl-maven-plugin</artifactId>
         <version>${maven.j2cl.plugin}</version>
-        <configuration>
-          <compilationLevel>ADVANCED</compilationLevel>
-        </configuration>
-        <executions>
-          <execution>
-            <id>j2cl-test</id>
-            <goals>
-              <goal>test</goal>
-            </goals>
-<!-- TODO does not work. See https://github.com/Vertispan/j2clmavenplugin/issues/14 for more informations -->
-<!--            <phase>test</phase>-->
-            <configuration>
-              <defines>
-                <gwt.enableDebugId>true</gwt.enableDebugId>
-                <gwt.cspCompatModeEnabled>true</gwt.cspCompatModeEnabled>
-                <gwt.strictCspTestingEnabled>true</gwt.strictCspTestingEnabled>
-              </defines>
-              <tests>
-                <test>org.gwtproject.editor.client.DirtyEditorTest</test>
-                <test>org.gwtproject.editor.client.EditorErrorTest</test>
-                <test>org.gwtproject.editor.client.SimpleBeanEditorTest</test>
-                <test>org.gwtproject.editor.client.impl.DelegateMapTest</test>
-                <test>org.gwtproject.editor.client.adapters.ListEditorWrapperTest</test>
-              </tests>
-            </configuration>
-          </execution>
-        </executions>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-surefire-plugin</artifactId>
-        <version>${maven.surfire.plugin}</version>
-        <configuration>
-          <skipTests>true</skipTests>
-        </configuration>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
diff --git a/gwt-editor-processor/pom.xml b/gwt-editor-processor/pom.xml
index 99a381a..89fa504 100644
--- a/gwt-editor-processor/pom.xml
+++ b/gwt-editor-processor/pom.xml
@@ -46,17 +46,16 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
 
         <auto.common.version>1.1</auto.common.version>
         <auto.service.version>1.0</auto.service.version>
-        <compile-testing.version>0.18</compile-testing.version>
-        <gwt.version>2.9.0</gwt.version>
-        <javapoet.version>1.12.1</javapoet.version>
-        <compile.testing.version>0.18</compile.testing.version>
-        <junit.version>4.13.1</junit.version>
-        <org.truth.version>0.23</org.truth.version>
+        <gwt.version>2.12.1</gwt.version>
+        <javapoet.version>1.13.0</javapoet.version>
+        <compile.testing.version>0.21.0</compile.testing.version>
+        <junit.version>4.13.2</junit.version>
+        <org.truth.version>1.1.5</org.truth.version>
         <truth.version>1.0</truth.version>
 
         <maven.shade.plugin>3.2.4</maven.shade.plugin>
@@ -93,13 +92,13 @@
 
         <!-- only for testing -->
         <dependency>
-            <groupId>com.google.gwt</groupId>
+            <groupId>org.gwtproject</groupId>
             <artifactId>gwt-user</artifactId>
             <version>${gwt.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
-            <groupId>com.google.gwt</groupId>
+            <groupId>org.gwtproject</groupId>
             <artifactId>gwt-dev</artifactId>
             <version>${gwt.version}</version>
             <scope>test</scope>
@@ -110,16 +109,11 @@
             <version>${compile.testing.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.truth0</groupId>
-            <artifactId>truth</artifactId>
-            <version>${org.truth.version}</version>
-            <scope>test</scope>
-        </dependency>
+        <!-- https://mvnrepository.com/artifact/com.google.truth/truth -->
         <dependency>
             <groupId>com.google.truth</groupId>
             <artifactId>truth</artifactId>
-            <version>${truth.version}</version>
+            <version>${org.truth.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -135,10 +129,8 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.6.1</version>
                 <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
+                    <release>${maven.compiler.target}</release>
                     <showWarnings>true</showWarnings>
                     <showDeprecation>true</showDeprecation>
                     <meminitial>128m</meminitial>
diff --git a/gwt-editor/pom.xml b/gwt-editor/pom.xml
index ca1610b..de7dd23 100644
--- a/gwt-editor/pom.xml
+++ b/gwt-editor/pom.xml
@@ -47,7 +47,7 @@
   <inceptionYear>2018</inceptionYear>
 
   <properties>
-    <maven.gwt.plugin>1.0.0</maven.gwt.plugin>
+    <maven.gwt.plugin>1.1.0</maven.gwt.plugin>
 
     <gwt-event.version>1.0.0-RC1</gwt-event.version>
   </properties>
diff --git a/pom.xml b/pom.xml
index d5ea77f..5205049 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,10 +54,10 @@
 
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
 
-        <maven.compiler.plugin>3.8.1</maven.compiler.plugin>
+        <maven.compiler.plugin>3.11.0</maven.compiler.plugin>
         <maven.deploy.plugin>3.0.0-M1</maven.deploy.plugin>
         <maven.flatten.plugin>1.2.2</maven.flatten.plugin>
         <maven.fmt.plugin>2.9</maven.fmt.plugin>
@@ -160,8 +160,7 @@
                     <artifactId>maven-compiler-plugin</artifactId>
                     <version>${maven.compiler.plugin}</version>
                     <configuration>
-                        <source>${maven.compiler.source}</source>
-                        <target>${maven.compiler.target}</target>
+                       <release>${maven.compiler.target}</release>
                     </configuration>
                 </plugin>
             </plugins>