diff --git a/pom.xml b/pom.xml
index 4a6dc8d45..11a3816fa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -73,6 +73,35 @@
                     <compilerArgs>--enable-preview</compilerArgs>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <version>3.3.0</version>
+
+                <configuration>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                </configuration>
+
+                <executions>
+                    <execution>
+                        <id>make-assembly</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                        <configuration>
+                            <archive>
+                                <manifest>
+                                    <mainClass>de.bixilon.minosoft.Minosoft</mainClass>
+                                </manifest>
+                            </archive>
+                        </configuration>
+                    </execution>
+                </executions>
+
+            </plugin>
         </plugins>
     </build>
 
@@ -82,7 +111,7 @@
         <maven.compiler.source>15</maven.compiler.source>
         <maven.compiler.target>15</maven.compiler.target>
         <javafx.version>16-ea+6</javafx.version>
-        <kotlin.version>1.4.21</kotlin.version>
+        <kotlin.version>1.4.30</kotlin.version>
     </properties>
 
 
@@ -151,7 +180,7 @@
         <dependency>
             <groupId>org.jline</groupId>
             <artifactId>jline</artifactId>
-            <version>3.18.0</version>
+            <version>3.19.0</version>
         </dependency>
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
@@ -164,6 +193,11 @@
             <version>${kotlin.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-runtime</artifactId>
+            <version>1.2.71</version>
+        </dependency>
         <dependency>
             <groupId>com.github.Bixilon</groupId>
             <artifactId>ascii-table</artifactId>
diff --git a/src/main/java/de/bixilon/minosoft/util/ChunkUtil.java b/src/main/java/de/bixilon/minosoft/util/ChunkUtil.java
index 35e32aa9a..7acbca3b4 100644
--- a/src/main/java/de/bixilon/minosoft/util/ChunkUtil.java
+++ b/src/main/java/de/bixilon/minosoft/util/ChunkUtil.java
@@ -160,9 +160,18 @@ public final class ChunkUtil {
                 for (int nibbleZ = 0; nibbleZ < ProtocolDefinition.SECTION_WIDTH_Z; nibbleZ++) {
                     for (int nibbleX = 0; nibbleX < ProtocolDefinition.SECTION_WIDTH_X; nibbleX++) {
                         int blockNumber = (((nibbleY * ProtocolDefinition.SECTION_HEIGHT_Y) + nibbleZ) * ProtocolDefinition.SECTION_WIDTH_X) + nibbleX;
-                        int startLong = (blockNumber * palette.getBitsPerBlock()) / 64;
-                        int startOffset = (blockNumber * palette.getBitsPerBlock()) % 64;
-                        int endLong = ((blockNumber + 1) * palette.getBitsPerBlock() - 1) / 64;
+                        int startLong;
+                        int startOffset;
+                        int endLong;
+
+                        if (buffer.getVersionId() < V_20W49A) { // ToDo: When did this changed? is just a guess
+                            startLong = (blockNumber * palette.getBitsPerBlock()) / 64;
+                            startOffset = (blockNumber * palette.getBitsPerBlock()) % 64;
+                            endLong = ((blockNumber + 1) * palette.getBitsPerBlock() - 1) / 64;
+                        } else {
+                            startLong = endLong = blockNumber / (64 / palette.getBitsPerBlock());
+                            startOffset = (blockNumber % (64 / palette.getBitsPerBlock())) * palette.getBitsPerBlock();
+                        }
 
                         int blockId;
                         if (startLong == endLong) {