diff --git a/SerialPort.cpp b/SerialPort.cpp
index e6738a0..ad3d0fb 100644
--- a/SerialPort.cpp
+++ b/SerialPort.cpp
@@ -66,6 +66,9 @@ const uint8_t MMDVM_NAK          = 0x7FU;
 
 const uint8_t MMDVM_SERIAL       = 0x80U;
 
+const uint8_t MMDVM_TRANSPARENT  = 0x90U;
+const uint8_t MMDVM_QSO_INFO     = 0x91U;
+
 const uint8_t MMDVM_DEBUG1       = 0xF1U;
 const uint8_t MMDVM_DEBUG2       = 0xF2U;
 const uint8_t MMDVM_DEBUG3       = 0xF3U;
@@ -812,6 +815,11 @@ void CSerialPort::process()
             }
             break;
 
+          case MMDVM_TRANSPARENT:
+          case MMDVM_QSO_INFO:
+            // Do nothing on the MMDVM.
+            break;
+
 #if defined(SERIAL_REPEATER) || defined(SERIAL_REPEATER_USART1)
           case MMDVM_SERIAL:
             writeInt(3U, m_buffer + 3U, m_len - 3U);
diff --git a/version.h b/version.h
index cdfedd9..86b20d8 100644
--- a/version.h
+++ b/version.h
@@ -24,8 +24,8 @@
 
 #define VER_MAJOR       "1"
 #define VER_MINOR       "4"
-#define VER_REV         "12"
-#define VERSION_DATE    "20181104"
+#define VER_REV         "13"
+#define VERSION_DATE    "20181204"
 
 #if defined(ZUMSPOT_ADF7021)
 #define BOARD_INFO      "ZUMspot"