diff --git a/README.md b/README.md
index 96f8598..b25b795 100644
--- a/README.md
+++ b/README.md
@@ -4,8 +4,8 @@ Simple POS (Point of Sale) system for small to medium-sized events with receipt
 
 ## Requirements
 
-- Java JDK 17+
-- Maven 3.6+
+- Java JDK 21+
+- Maven 3.9+
 - Display >= 1366x768
 
 ## Video Tutorials (German | Deutsch)
@@ -18,7 +18,7 @@ Simple POS (Point of Sale) system for small to medium-sized events with receipt
 ### 1. Install dependencies
 
 ```bash
-sudo zypper install java-17-openjdk-devel maven
+sudo zypper install java-21-openjdk java-21-openjdk-devel maven
 ```
 
 ### 2. Install VSCode extensions
diff --git a/pom.xml b/pom.xml
index e9bbd81..d890a64 100644
--- a/pom.xml
+++ b/pom.xml
@@ -8,16 +8,17 @@
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<maven.compiler.source>17</maven.compiler.source>
-		<maven.compiler.target>17</maven.compiler.target>
-		<javafx.version>21.0.5</javafx.version>
+		<maven.compiler.source>21</maven.compiler.source>
+		<maven.compiler.target>21</maven.compiler.target>
+		<maven.compiler.release>21</maven.compiler.release>
+		<javafx.version>23.0.1</javafx.version>
 	</properties>
 
 	<dependencies>
 		<dependency>
 			<groupId>org.junit.jupiter</groupId>
 			<artifactId>junit-jupiter</artifactId>
-			<version>5.11.4</version>
+			<version>6.0.3</version>
 			<scope>test</scope>
 		</dependency>
 
@@ -42,7 +43,7 @@
 		<dependency>
 			<groupId>org.xerial</groupId>
 			<artifactId>sqlite-jdbc</artifactId>
-			<version>3.47.1.0</version>
+			<version>3.51.2.0</version>
 		</dependency>
 	</dependencies>
 
@@ -52,10 +53,11 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.13.0</version>
+				<version>3.15.0</version>
 				<configuration>
-					<source>17</source>
-					<target>17</target>
+					<source>21</source>
+					<target>21</target>
+					<release>21</release>
 					<showWarnings>true</showWarnings>
 					<showDeprecation>true</showDeprecation>
 				</configuration>
@@ -64,7 +66,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>exec-maven-plugin</artifactId>
-				<version>3.5.0</version>
+				<version>3.6.3</version>
 				<executions>
 					<execution>
 						<goals>
@@ -80,7 +82,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-shade-plugin</artifactId>
-				<version>3.6.0</version>
+				<version>3.6.1</version>
 				<configuration>
 					<finalName>jFxKasse</finalName>
 					<shadedArtifactAttached>true</shadedArtifactAttached>
@@ -111,4 +113,4 @@
 
 		</plugins>
 	</build>
-</project>
+</project>
\ No newline at end of file
diff --git a/src/main/java/com/jFxKasse/controller/MainWindowController.java b/src/main/java/com/jFxKasse/controller/MainWindowController.java
index 7472352..2eff6e2 100644
--- a/src/main/java/com/jFxKasse/controller/MainWindowController.java
+++ b/src/main/java/com/jFxKasse/controller/MainWindowController.java
@@ -416,7 +416,8 @@ public class MainWindowController {
 			desktop.open(file);
 		}
 		else {
-			Runtime.getRuntime().exec("xdg-open " + Main.filepath);
+			ProcessBuilder pb = new ProcessBuilder("xdg-open ".split("\\s+"));
+			pb.start();
 		}
 	}