diff --git a/pom.xml b/pom.xml
index 41d132a..205c41b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,8 +15,8 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <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>
   </properties>
 
   <build>
diff --git a/src/main/java/de/devloop/mavor/servlet/DownloadJars.java b/src/main/java/de/devloop/mavor/servlet/DownloadJars.java
index d4c10b5..9b1374d 100644
--- a/src/main/java/de/devloop/mavor/servlet/DownloadJars.java
+++ b/src/main/java/de/devloop/mavor/servlet/DownloadJars.java
@@ -102,7 +102,12 @@ public class DownloadJars extends AuthenticatedServlet {
     }
 
     private ExecutionResult executeMaven(File tempDirJars) throws IOException, InterruptedException {
-        String mavenCmd = String.format("%s dependency:copy-dependencies -DoutputDirectory=%s", configuration.getMavenExecutable(), tempDirJars.getCanonicalPath());
+        String[] mavenCmd = new String[]{
+            configuration.getMavenExecutable(),
+            "dependency:copy-dependencies",
+            String.format("-DoutputDirectory=%s", tempDirJars.getCanonicalPath())
+        };
+        
         Process mvnProcess = Runtime.getRuntime().exec(mavenCmd, null, tempDirJars.getCanonicalFile());
         String stdout = new String(mvnProcess.getInputStream().readAllBytes(), StandardCharsets.UTF_8);
         String stderr = new String(mvnProcess.getErrorStream().readAllBytes(), StandardCharsets.UTF_8);