diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index abfca94ff..22ad0b09e 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ '11', '17' ]
+        java: [ '17' ]
         maven: [ '3.8.6' ]
         os: [ 'ubuntu-22.04' ]
     name: Build (Java ${{ matrix.java }}, ${{ matrix.os }})
@@ -56,7 +56,7 @@ jobs:
           maven-version: ${{ matrix.maven }}
 
       - name: Register Problem Matchers
-        if: ${{ matrix.java == '11' }}
+        if: ${{ matrix.java == '17' }}
         id: problem_matchers
         run: |
           echo "::add-matcher::.github/openhab-compile-problems.json"
@@ -86,7 +86,7 @@ jobs:
           path: target/summary_report.html
 
       - name: Report SAT Errors as Annotations
-        if: ${{ matrix.java == '11' && always() && ((steps.build.outcome == 'success') || (steps.build.outcome == 'failure')) }}
+        if: ${{ matrix.java == '17' && always() && ((steps.build.outcome == 'success') || (steps.build.outcome == 'failure')) }}
         uses: ghys/checkstyle-github-action@main
         with:
           title: CheckStyle Violations
diff --git a/pom.xml b/pom.xml
index a521d8cee..921b7b550 100644
--- a/pom.xml
+++ b/pom.xml
@@ -62,7 +62,7 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    <oh.java.version>11</oh.java.version>
+    <oh.java.version>17</oh.java.version>
     <maven.compiler.source>${oh.java.version}</maven.compiler.source>
     <maven.compiler.target>${oh.java.version}</maven.compiler.target>
     <maven.compiler.compilerVersion>${oh.java.version}</maven.compiler.compilerVersion>
@@ -73,7 +73,8 @@
     <karaf.version>4.3.7</karaf.version>
     <ohc.version>4.0.0-SNAPSHOT</ohc.version>
     <sat.version>0.13.0</sat.version>
-    <spotless.version>2.0.3</spotless.version>
+    <spotless.version>2.28.0</spotless.version>
+    <spotless.eclipse.version>4.21.0</spotless.eclipse.version>
   </properties>
 
   <build>
@@ -254,12 +255,12 @@ Import-Package: \\
             <dependency>
               <groupId>org.codehaus.plexus</groupId>
               <artifactId>plexus-compiler-eclipse</artifactId>
-              <version>2.11.1</version>
+              <version>2.12.1</version>
             </dependency>
             <dependency>
               <groupId>org.eclipse.jdt</groupId>
               <artifactId>ecj</artifactId>
-              <version>3.28.0</version>
+              <version>3.30.0</version>
             </dependency>
           </dependencies>
         </plugin>
@@ -327,8 +328,12 @@ Import-Package: \\
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-plugin</artifactId>
-          <version>3.0.0-M5</version>
+          <version>3.0.0-M7</version>
           <configuration>
+            <argLine>
+              --add-opens java.base/java.net=ALL-UNNAMED
+              --add-opens java.base/java.util=ALL-UNNAMED
+            </argLine>
             <systemPropertyVariables>
               <junit.jupiter.execution.timeout.default>15 m</junit.jupiter.execution.timeout.default>
             </systemPropertyVariables>
@@ -442,7 +447,7 @@ Import-Package: \\
             <java>
               <eclipse>
                 <file>openhab_codestyle.xml</file>
-                <version>4.13.0</version>
+                <version>${spotless.eclipse.version}</version>
               </eclipse>
               <removeUnusedImports/>
               <importOrder>
@@ -469,7 +474,7 @@ Import-Package: \\
                   <files>
                     <file>openhab_wst_xml_files.prefs</file>
                   </files>
-                  <version>4.13.0</version>
+                  <version>${spotless.eclipse.version}</version>
                 </eclipseWtp>
                 <trimTrailingWhitespace/>
                 <endWithNewline/>
@@ -484,7 +489,7 @@ Import-Package: \\
                   <files>
                     <file>openhab_wst_pom_file.prefs</file>
                   </files>
-                  <version>4.13.0</version>
+                  <version>${spotless.eclipse.version}</version>
                 </eclipseWtp>
                 <trimTrailingWhitespace/>
                 <endWithNewline/>
@@ -516,7 +521,7 @@ Import-Package: \\
       <plugin>
         <groupId>org.commonjava.maven.plugins</groupId>
         <artifactId>directory-maven-plugin</artifactId>
-        <version>0.3.1</version>
+        <version>1.0</version>
         <executions>
           <execution>
             <id>directories</id>
@@ -547,7 +552,7 @@ Import-Package: \\
             <configuration>
               <rules>
                 <requireJavaVersion>
-                  <version>[11.0,18.0)</version>
+                  <version>[17.0,18.0)</version>
                 </requireJavaVersion>
               </rules>
             </configuration>
@@ -612,7 +617,7 @@ Import-Package: \\
                       <pluginExecutionFilter>
                         <groupId>org.commonjava.maven.plugins</groupId>
                         <artifactId>directory-maven-plugin</artifactId>
-                        <versionRange>[0.3.1,)</versionRange>
+                        <versionRange>[1.0,)</versionRange>
                         <goals>
                           <goal>directory-of</goal>
                         </goals>