diff --git a/conn.go b/conn.go
index 6ff0ef8b..c38a2aad 100644
--- a/conn.go
+++ b/conn.go
@@ -68,10 +68,14 @@ func (c *conn) rxMsg() (msg interface{}, err error) {
 	}
 
 	switch t {
+	case 'K':
+		return c.rxBackendKeyData(buf), nil
 	case 'R':
 		return c.rxAuthenticationX(buf)
 	case 'S':
 		return c.rxParameterStatus(buf)
+	case 'Z':
+		return c.rxReadyForQuery(buf), nil
 	default:
 		return nil, fmt.Errorf("Received unknown message type: %c", t)
 	}
@@ -125,3 +129,16 @@ func (c *conn) rxParameterStatus(buf []byte) (msg *parameterStatus, err error) {
 	msg.value, err = r.ReadString(0)
 	return
 }
+
+func (c *conn) rxBackendKeyData(buf []byte) (msg *backendKeyData) {
+	msg = new(backendKeyData)
+	msg.pid = int32(binary.BigEndian.Uint32(buf[:4]))
+	msg.secretKey = int32(binary.BigEndian.Uint32(buf[4:8]))
+	return
+}
+
+func (c *conn) rxReadyForQuery(buf []byte) (msg *readyForQuery) {
+	msg = new(readyForQuery)
+	msg.txStatus = buf[0]
+	return
+}
diff --git a/messages.go b/messages.go
index b5428742..5d24c22c 100644
--- a/messages.go
+++ b/messages.go
@@ -46,3 +46,20 @@ type parameterStatus struct {
 func (self *parameterStatus) String() string {
 	return fmt.Sprintf("ParameterStatus %s: %s", self.name, self.value)
 }
+
+type backendKeyData struct {
+	pid       int32
+	secretKey int32
+}
+
+func (self *backendKeyData) String() string {
+	return fmt.Sprintf("BackendKeyData pid: %d, secretKey: %d", self.pid, self.secretKey)
+}
+
+type readyForQuery struct {
+	txStatus byte
+}
+
+func (self *readyForQuery) String() string {
+	return fmt.Sprintf("ReadyForQuery txStatus: %c", self.txStatus)
+}