diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 9958ac0f4..3f97090df 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -41,7 +41,7 @@ jobs:
     - name: Set up JDK
       uses: actions/setup-java@v3
       with:
-        java-version: 17
+        java-version: 21
         distribution: 'temurin'
             
     - name: Run Tests
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 7f21a6818..15d774245 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'temurin'
       - name: Build JPlag
         run: mvn -U -B clean package assembly:single
diff --git a/.github/workflows/spotless.yml b/.github/workflows/spotless.yml
index 25de0f0a0..21359d3fa 100644
--- a/.github/workflows/spotless.yml
+++ b/.github/workflows/spotless.yml
@@ -41,7 +41,7 @@ jobs:
     - name: Set up JDK
       uses: actions/setup-java@v3
       with:
-        java-version: 17
+        java-version: 21
         distribution: 'temurin'
       
     - name: Check with Spotless
diff --git a/pom.xml b/pom.xml
index 19c045873..c5267261b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -72,8 +72,8 @@
         <!--suppress UnresolvedMavenProperty -->
         <sonar.coverage.jacoco.xmlReportPaths>${maven.multiModuleProjectDirectory}/coverage-report/target/site/jacoco-aggregate/jacoco.xml</sonar.coverage.jacoco.xmlReportPaths>
 
-        <maven.compiler.source>17</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
         <spotless.version>2.40.0</spotless.version>
         <slf4j.version>2.0.9</slf4j.version>
         <junit.version>5.10.0</junit.version>