diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d69865cdc..18889aca5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,11 +20,15 @@ jobs:
       SONAR_PROJECT_KEY: ${{ secrets.SONAR_PROJECT_KEY}}
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v3
       with:
-        java-version: 17
+        java-version: 21
         distribution: 'temurin'
+    - name: Set up Maven
+      uses: stCarolas/setup-maven@v5
+      with:
+        maven-version: 3.9.8
     - name: Cache SonarCloud packages
       uses: actions/cache@v1
       if: ${{ env.SONAR_TOKEN != 0 }}
@@ -43,7 +47,7 @@ jobs:
     - name: Maven test + SonarCloud
       if: ${{ env.SONAR_TOKEN != 0 }}
       run: mvn -B verify org.sonarsource.scanner.maven:sonar-maven-plugin:sonar
-        -Dsonar.java.source=17
+        -Dsonar.java.source=21
         -Dsonar.projectKey=${{ env.SONAR_PROJECT_KEY }}
         -Dsonar.organization=${{ env.SONAR_ORGANIZATION }}
         -Dsonar.host.url=https://sonarcloud.io
@@ -51,7 +55,7 @@ jobs:
       if: ${{ env.SONAR_TOKEN == 0 }}
       run: mvn -B verify
     - name: Upload surefire test results
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: Surefire-Test-Results
         path: ~/**/surefire-reports/**/*.txt
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 0b7b61c1e..fdb0950dc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,6 +27,7 @@
     <properties>
         <application.main.class>io.lighty.yang.validator.Main</application.main.class>
         <application.attach.zip>true</application.attach.zip>
+        <logback-version>1.5.8</logback-version>
     </properties>
 
     <dependencies>
@@ -37,12 +38,12 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.5.7</version>
+            <version>${logback-version}</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.5.7</version>
+            <version>${logback-version}</version>
         </dependency>
 
         <dependency>
diff --git a/src/main/assembly/resources/lyv b/src/main/assembly/resources/lyv
index b62ecfe0a..b59398d56 100755
--- a/src/main/assembly/resources/lyv
+++ b/src/main/assembly/resources/lyv
@@ -1,7 +1,7 @@
 #!/bin/bash
 
-# Set JAVA_HOME to point to a specific Java 17+ JDK
-#export JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64
+# Set JAVA_HOME to point to a specific Java 21+ JDK
+#export JAVA_HOME=/usr/lib/jvm/java-21-openjdk-amd64
 
 # If JAVA_HOME is not set, try to find it using java itself
 if [ -z ${JAVA_HOME} ]; then
@@ -9,10 +9,10 @@ if [ -z ${JAVA_HOME} ]; then
 	JAVA_HOME=`java -XshowSettings:properties -version 2>&1 > /dev/null | grep 'java.home' | sed -e 's/^.*java.home = \(.*\)$/\1/'`
 fi;
 
-# Make sure we are using Java 17+
+# Make sure we are using Java 21+
 JAVA_VERSION=`${JAVA_HOME}/bin/java -version 2>&1 | head -1 | cut -d'"' -f2 | sed '/^1\./s///' | cut -d'.' -f1`
-if [ -z ${JAVA_VERSION} ] || [ ${JAVA_VERSION} -lt 17 ]; then
-        echo "Java 17+ is required to run this application!"
+if [ -z ${JAVA_VERSION} ] || [ ${JAVA_VERSION} -lt 21 ]; then
+        echo "Java 21+ is required to run this application!"
         exit -1
 fi;