diff --git a/src/main/java/dslab/mailbox/DMTPConnection.java b/src/main/java/dslab/mailbox/DMTPConnection.java
index 60805b0..90afa3e 100644
--- a/src/main/java/dslab/mailbox/DMTPConnection.java
+++ b/src/main/java/dslab/mailbox/DMTPConnection.java
@@ -39,7 +39,7 @@ public class DMTPConnection implements Runnable {
         try {
             this.out = new PrintWriter(socket.getOutputStream(), true);
             this.in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
-            out.println("ok DMTP");
+            out.println("ok DMTP2.0");
 
             String userInput;
 
diff --git a/src/main/java/dslab/transfer/ClientConnection.java b/src/main/java/dslab/transfer/ClientConnection.java
index 58212ff..7a83b7b 100644
--- a/src/main/java/dslab/transfer/ClientConnection.java
+++ b/src/main/java/dslab/transfer/ClientConnection.java
@@ -29,7 +29,7 @@ public class ClientConnection implements Runnable {
         try {
             this.out = new PrintWriter(socket.getOutputStream(), true);
             this.in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
-            out.println("ok DMTP");
+            out.println("ok DMTP2.0");
 
             String userInput;