diff --git a/comms.ino b/comms.ino
index 50829572..8e29f611 100644
--- a/comms.ino
+++ b/comms.ino
@@ -62,12 +62,12 @@ void command()
       break;
 
     case 'S': // send code version
-      Serial.print("Speeduino 2016.11");
+      Serial.print("Speeduino 2016.12-dev");
       currentStatus.secl = 0; //This is required in TS3 due to its stricter timings
       break;
 
     case 'Q': // send code version
-      Serial.print("speeduino 201611");
+      Serial.print("speeduino 201612-dev");
      break;
 
     case 'V': // send VE table and constants in binary
diff --git a/reference/speeduino.ini b/reference/speeduino.ini
index 577ea78a..c2bccf80 100644
--- a/reference/speeduino.ini
+++ b/reference/speeduino.ini
@@ -6,7 +6,7 @@
 
    queryCommand   = "Q"
    ;signature      = 20
-   signature      = "speeduino 201611"
+   signature      = "speeduino 201612-dev"
    versionInfo    = "S"  ; Put this in the title bar.