diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index 9d11187..a69eae1 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -8,13 +8,13 @@
 	"Deps": [
 		{
 			"ImportPath": "github.com/godbus/dbus",
-			"Comment": "v3-15-g230e4b2",
-			"Rev": "230e4b23db2fd81c53eaa0073f76659d4849ce51"
+			"Comment": "v4.0.0-5-g32c6cc2",
+			"Rev": "32c6cc29c14570de4cf6d7e7737d68fb2d01ad15"
 		},
 		{
 			"ImportPath": "github.com/godbus/dbus/introspect",
-			"Comment": "v3-15-g230e4b2",
-			"Rev": "230e4b23db2fd81c53eaa0073f76659d4849ce51"
+			"Comment": "v4.0.0-5-g32c6cc2",
+			"Rev": "32c6cc29c14570de4cf6d7e7737d68fb2d01ad15"
 		},
 		{
 			"ImportPath": "github.com/gotk3/gotk3/cairo",
diff --git a/vendor/github.com/godbus/dbus/conn.go b/vendor/github.com/godbus/dbus/conn.go
index 62bcbed..e07753a 100644
--- a/vendor/github.com/godbus/dbus/conn.go
+++ b/vendor/github.com/godbus/dbus/conn.go
@@ -16,6 +16,7 @@ var (
 	systemBusLck  sync.Mutex
 	sessionBus    *Conn
 	sessionBusLck sync.Mutex
+	sessionEnvLck sync.Mutex
 )
 
 // ErrClosed is the error returned by calls on a closed connection.
@@ -53,8 +54,9 @@ type Conn struct {
 	closed bool
 	outLck sync.RWMutex
 
-	signals    []chan<- *Signal
-	signalsLck sync.Mutex
+	signals       []chan<- *Signal
+	signalsClosed bool
+	signalsLck    sync.Mutex
 
 	eavesdropped    chan<- *Message
 	eavesdroppedLck sync.Mutex
@@ -91,6 +93,8 @@ func SessionBus() (conn *Conn, err error) {
 
 // SessionBusPrivate returns a new private connection to the session bus.
 func SessionBusPrivate() (*Conn, error) {
+	sessionEnvLck.Lock()
+	defer sessionEnvLck.Unlock()
 	address := os.Getenv("DBUS_SESSION_BUS_ADDRESS")
 	if address != "" && address != "autolaunch:" {
 		return Dial(address)
@@ -186,6 +190,7 @@ func (conn *Conn) Close() error {
 	conn.closed = true
 	conn.outLck.Unlock()
 	conn.signalsLck.Lock()
+	conn.signalsClosed = true
 	for _, ch := range conn.signals {
 		close(ch)
 	}
@@ -338,6 +343,10 @@ func (conn *Conn) inWorker() {
 					Body:   msg.Body,
 				}
 				conn.signalsLck.Lock()
+				if conn.signalsClosed {
+					conn.signalsLck.Unlock()
+					return
+				}
 				for _, ch := range conn.signals {
 					ch <- signal
 				}
@@ -621,16 +630,11 @@ func dereferenceAll(vs []interface{}) []interface{} {
 
 // getKey gets a key from a the list of keys. Returns "" on error / not found...
 func getKey(s, key string) string {
-	i := strings.Index(s, key)
-	if i == -1 {
-		return ""
-	}
-	if i+len(key)+1 >= len(s) || s[i+len(key)] != '=' {
-		return ""
-	}
-	j := strings.Index(s, ",")
-	if j == -1 {
-		j = len(s)
+	for _, keyEqualsValue := range strings.Split(s, ",") {
+		keyValue := strings.SplitN(keyEqualsValue, "=", 2)
+		if len(keyValue) == 2 && keyValue[0] == key {
+			return keyValue[1]
+		}
 	}
-	return s[i+len(key)+1 : j]
+	return ""
 }
diff --git a/vendor/github.com/godbus/dbus/conn_other.go b/vendor/github.com/godbus/dbus/conn_other.go
index f74b875..289e8c5 100644
--- a/vendor/github.com/godbus/dbus/conn_other.go
+++ b/vendor/github.com/godbus/dbus/conn_other.go
@@ -5,6 +5,7 @@ package dbus
 import (
 	"bytes"
 	"errors"
+	"os"
 	"os/exec"
 )
 
@@ -23,5 +24,8 @@ func sessionBusPlatform() (*Conn, error) {
 		return nil, errors.New("dbus: couldn't determine address of session bus")
 	}
 
-	return Dial(string(b[i+1 : j]))
+	env, addr := string(b[0:i]), string(b[i+1:j])
+	os.Setenv(env, addr)
+
+	return Dial(addr)
 }
diff --git a/vendor/github.com/godbus/dbus/export.go b/vendor/github.com/godbus/dbus/export.go
index c0d37b1..6c33522 100644
--- a/vendor/github.com/godbus/dbus/export.go
+++ b/vendor/github.com/godbus/dbus/export.go
@@ -1,6 +1,7 @@
 package dbus
 
 import (
+	"bytes"
 	"errors"
 	"fmt"
 	"reflect"
@@ -126,6 +127,28 @@ func (conn *Conn) handleCall(msg *Message) {
 			conn.sendError(errmsgUnknownMethod, sender, serial)
 		}
 		return
+	} else if ifaceName == "org.freedesktop.DBus.Introspectable" && name == "Introspect" {
+		if _, ok := conn.handlers[path]; !ok {
+			subpath := make(map[string]struct{})
+			var xml bytes.Buffer
+			xml.WriteString("<node>")
+			for h, _ := range conn.handlers {
+				p := string(path)
+				if p != "/" {
+					p += "/"
+				}
+				if strings.HasPrefix(string(h), p) {
+					node_name := strings.Split(string(h[len(p):]), "/")[0]
+					subpath[node_name] = struct{}{}
+				}
+			}
+			for s, _ := range subpath {
+				xml.WriteString("\n\t<node name=\"" + s + "\"/>")
+			}
+			xml.WriteString("\n</node>")
+			conn.sendReply(sender, serial, xml.String())
+			return
+		}
 	}
 	if len(name) == 0 {
 		conn.sendError(errmsgUnknownMethod, sender, serial)
diff --git a/vendor/github.com/godbus/dbus/message.go b/vendor/github.com/godbus/dbus/message.go
index 075d6e3..6a92536 100644
--- a/vendor/github.com/godbus/dbus/message.go
+++ b/vendor/github.com/godbus/dbus/message.go
@@ -22,6 +22,13 @@ const (
 	// FlagNoAutoStart signals that the message bus should not automatically
 	// start an application when handling this message.
 	FlagNoAutoStart
+	// FlagAllowInteractiveAuthorization may be set on a method call
+	// message to inform the receiving side that the caller is prepared
+	// to wait for interactive authorization, which might take a
+	// considerable time to complete. For instance, if this flag is set,
+	// it would be appropriate to query the user for passwords or
+	// confirmation via Polkit or a similar framework.
+	FlagAllowInteractiveAuthorization
 )
 
 // Type represents the possible types of a D-Bus message.
@@ -248,7 +255,7 @@ func (msg *Message) EncodeTo(out io.Writer, order binary.ByteOrder) error {
 // IsValid checks whether msg is a valid message and returns an
 // InvalidMessageError if it is not.
 func (msg *Message) IsValid() error {
-	if msg.Flags & ^(FlagNoAutoStart|FlagNoReplyExpected) != 0 {
+	if msg.Flags & ^(FlagNoAutoStart|FlagNoReplyExpected|FlagAllowInteractiveAuthorization) != 0 {
 		return InvalidMessageError("invalid flags")
 	}
 	if msg.Type == 0 || msg.Type >= typeMax {
diff --git a/vendor/github.com/godbus/dbus/transport_tcp.go b/vendor/github.com/godbus/dbus/transport_tcp.go
new file mode 100644
index 0000000..dd1c8e5
--- /dev/null
+++ b/vendor/github.com/godbus/dbus/transport_tcp.go
@@ -0,0 +1,43 @@
+//+build !windows
+
+package dbus
+
+import (
+	"errors"
+	"net"
+)
+
+func init() {
+	transports["tcp"] = newTcpTransport
+}
+
+func tcpFamily(keys string) (string, error) {
+	switch getKey(keys, "family") {
+	case "":
+		return "tcp", nil
+	case "ipv4":
+		return "tcp4", nil
+	case "ipv6":
+		return "tcp6", nil
+	default:
+		return "", errors.New("dbus: invalid tcp family (must be ipv4 or ipv6)")
+	}
+}
+
+func newTcpTransport(keys string) (transport, error) {
+	host := getKey(keys, "host")
+	port := getKey(keys, "port")
+	if host == "" || port == "" {
+		return nil, errors.New("dbus: unsupported address (must set host and port)")
+	}
+
+	protocol, err := tcpFamily(keys)
+	if err != nil {
+		return nil, err
+	}
+	socket, err := net.Dial(protocol, net.JoinHostPort(host, port))
+	if err != nil {
+		return nil, err
+	}
+	return NewConn(socket)
+}
diff --git a/vendor/github.com/godbus/dbus/transport_unixcred_openbsd.go b/vendor/github.com/godbus/dbus/transport_unixcred_openbsd.go
new file mode 100644
index 0000000..af7bafd
--- /dev/null
+++ b/vendor/github.com/godbus/dbus/transport_unixcred_openbsd.go
@@ -0,0 +1,14 @@
+package dbus
+
+import "io"
+
+func (t *unixTransport) SendNullByte() error {
+	n, _, err := t.UnixConn.WriteMsgUnix([]byte{0}, nil, nil)
+	if err != nil {
+		return err
+	}
+	if n != 1 {
+		return io.ErrShortWrite
+	}
+	return nil
+}