diff --git a/Gopkg.lock b/Gopkg.lock
index 00f0082..837d41e 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -4,7 +4,7 @@
 [[projects]]
   name = "github.com/gorilla/handlers"
   packages = ["."]
-  revision = "a4d79d4487c2430a17d9dc8a1f74d1a6ed6908ca"
+  revision = "a4043c62cc2329bacda331d33fc908ab11ef0ec3"
   source = "https://github.com/gorilla/handlers"
   version = "v1.2.1"
 
@@ -18,7 +18,7 @@
   branch = "master"
   name = "github.com/spf13/cobra"
   packages = ["."]
-  revision = "4d647c8944eb42504a714e57e97f244ed6344722"
+  revision = "715f41bd7a70b5111f898b71ab484da52ee6266d"
 
 [[projects]]
   branch = "master"
diff --git a/vendor/github.com/gorilla/handlers/.travis.yml b/vendor/github.com/gorilla/handlers/.travis.yml
index 1ba74af..4ea1e7a 100644
--- a/vendor/github.com/gorilla/handlers/.travis.yml
+++ b/vendor/github.com/gorilla/handlers/.travis.yml
@@ -7,7 +7,6 @@ matrix:
     - go: 1.5
     - go: 1.6
     - go: 1.7
-    - go: 1.8
     - go: tip
   allow_failures:
     - go: tip
@@ -17,4 +16,3 @@ script:
   - diff -u <(echo -n) <(gofmt -d .)
   - go vet $(go list ./... | grep -v /vendor/)
   - go test -v -race ./...
-  
diff --git a/vendor/github.com/spf13/cobra/cobra.go b/vendor/github.com/spf13/cobra/cobra.go
index 2726d19..8928cef 100644
--- a/vendor/github.com/spf13/cobra/cobra.go
+++ b/vendor/github.com/spf13/cobra/cobra.go
@@ -47,6 +47,15 @@ var EnablePrefixMatching = false
 // To disable sorting, set it to false.
 var EnableCommandSorting = true
 
+// MousetrapHelpText enables an information splash screen on Windows
+// if the CLI is started from explorer.exe.
+// To disable the mousetrap, just set this variable to blank string ("").
+// Works only on Microsoft Windows.
+var MousetrapHelpText string = `This is a command line tool.
+
+You need to open cmd.exe and run it from there.
+`
+
 // AddTemplateFunc adds a template function that's available to Usage and Help
 // template generation.
 func AddTemplateFunc(name string, tmplFunc interface{}) {
diff --git a/vendor/github.com/spf13/cobra/cobra/cmd/helpers.go b/vendor/github.com/spf13/cobra/cobra/cmd/helpers.go
index 6114227..c5e261c 100644
--- a/vendor/github.com/spf13/cobra/cobra/cmd/helpers.go
+++ b/vendor/github.com/spf13/cobra/cobra/cmd/helpers.go
@@ -45,24 +45,34 @@ func er(msg interface{}) {
 }
 
 // isEmpty checks if a given path is empty.
+// Hidden files in path are ignored.
 func isEmpty(path string) bool {
 	fi, err := os.Stat(path)
 	if err != nil {
 		er(err)
 	}
-	if fi.IsDir() {
-		f, err := os.Open(path)
-		if err != nil {
-			er(err)
-		}
-		defer f.Close()
-		dirs, err := f.Readdirnames(1)
-		if err != nil && err != io.EOF {
-			er(err)
-		}
-		return len(dirs) == 0
+
+	if !fi.IsDir() {
+		return fi.Size() == 0
 	}
-	return fi.Size() == 0
+
+	f, err := os.Open(path)
+	if err != nil {
+		er(err)
+	}
+	defer f.Close()
+
+	names, err := f.Readdirnames(-1)
+	if err != nil && err != io.EOF {
+		er(err)
+	}
+
+	for _, name := range names {
+		if len(name) > 0 && name[0] != '.' {
+			return false
+		}
+	}
+	return true
 }
 
 // exists checks if a file or directory exists.
diff --git a/vendor/github.com/spf13/cobra/command.go b/vendor/github.com/spf13/cobra/command.go
index 2cd6ee8..c3e16b1 100644
--- a/vendor/github.com/spf13/cobra/command.go
+++ b/vendor/github.com/spf13/cobra/command.go
@@ -767,28 +767,28 @@ func (c *Command) InitDefaultHelpFlag() {
 // It is called automatically by executing the c or by calling help and usage.
 // If c already has help command or c has no subcommands, it will do nothing.
 func (c *Command) InitDefaultHelpCmd() {
-	if c.helpCommand != nil || !c.HasSubCommands() {
+	if !c.HasSubCommands() {
 		return
 	}
 
-	c.helpCommand = &Command{
-		Use:   "help [command]",
-		Short: "Help about any command",
-		Long: `Help provides help for any command in the application.
-    Simply type ` + c.Name() + ` help [path to command] for full details.`,
-		PersistentPreRun:  func(cmd *Command, args []string) {},
-		PersistentPostRun: func(cmd *Command, args []string) {},
+	if c.helpCommand == nil {
+		c.helpCommand = &Command{
+			Use:   "help [command]",
+			Short: "Help about any command",
+			Long: `Help provides help for any command in the application.
+Simply type ` + c.Name() + ` help [path to command] for full details.`,
 
-		Run: func(c *Command, args []string) {
-			cmd, _, e := c.Root().Find(args)
-			if cmd == nil || e != nil {
-				c.Printf("Unknown help topic %#q\n", args)
-				c.Root().Usage()
-			} else {
-				cmd.InitDefaultHelpFlag() // make possible 'help' flag to be shown
-				cmd.Help()
-			}
-		},
+			Run: func(c *Command, args []string) {
+				cmd, _, e := c.Root().Find(args)
+				if cmd == nil || e != nil {
+					c.Printf("Unknown help topic %#q\n", args)
+					c.Root().Usage()
+				} else {
+					cmd.InitDefaultHelpFlag() // make possible 'help' flag to be shown
+					cmd.Help()
+				}
+			},
+		}
 	}
 	c.RemoveCommand(c.helpCommand)
 	c.AddCommand(c.helpCommand)
diff --git a/vendor/github.com/spf13/cobra/command_test.go b/vendor/github.com/spf13/cobra/command_test.go
index f4fe146..aa6658f 100644
--- a/vendor/github.com/spf13/cobra/command_test.go
+++ b/vendor/github.com/spf13/cobra/command_test.go
@@ -120,7 +120,6 @@ func TestStripFlags(t *testing.T) {
 }
 
 func TestDisableFlagParsing(t *testing.T) {
-	as := []string{"-v", "-race", "-file", "foo.go"}
 	targs := []string{}
 	cmdPrint := &Command{
 		DisableFlagParsing: true,
@@ -128,14 +127,14 @@ func TestDisableFlagParsing(t *testing.T) {
 			targs = args
 		},
 	}
-	osargs := []string{"cmd"}
-	os.Args = append(osargs, as...)
+	args := []string{"cmd", "-v", "-race", "-file", "foo.go"}
+	cmdPrint.SetArgs(args)
 	err := cmdPrint.Execute()
 	if err != nil {
 		t.Error(err)
 	}
-	if !reflect.DeepEqual(as, targs) {
-		t.Errorf("expected: %v, got: %v", as, targs)
+	if !reflect.DeepEqual(args, targs) {
+		t.Errorf("expected: %v, got: %v", args, targs)
 	}
 }
 
@@ -316,5 +315,35 @@ func TestUseDeprecatedFlags(t *testing.T) {
 	if !strings.Contains(output.String(), "This flag is deprecated") {
 		t.Errorf("Expected to contain deprecated message, but got %q", output.String())
 	}
-
+}
+
+// TestSetHelpCommand checks, if SetHelpCommand works correctly.
+func TestSetHelpCommand(t *testing.T) {
+	c := &Command{Use: "c", Run: func(*Command, []string) {}}
+	output := new(bytes.Buffer)
+	c.SetOutput(output)
+	c.SetArgs([]string{"help"})
+
+	// Help will not be shown, if c has no subcommands.
+	c.AddCommand(&Command{
+		Use: "empty",
+		Run: func(cmd *Command, args []string) {},
+	})
+
+	correctMessage := "WORKS"
+	c.SetHelpCommand(&Command{
+		Use:   "help [command]",
+		Short: "Help about any command",
+		Long: `Help provides help for any command in the application.
+	Simply type ` + c.Name() + ` help [path to command] for full details.`,
+		Run: func(c *Command, args []string) { c.Print(correctMessage) },
+	})
+
+	if err := c.Execute(); err != nil {
+		t.Error("Unexpected error:", err)
+	}
+
+	if output.String() != correctMessage {
+		t.Errorf("Expected to contain %q message, but got %q", correctMessage, output.String())
+	}
 }
diff --git a/vendor/github.com/spf13/cobra/command_win.go b/vendor/github.com/spf13/cobra/command_win.go
index 4b0eaa1..edec728 100644
--- a/vendor/github.com/spf13/cobra/command_win.go
+++ b/vendor/github.com/spf13/cobra/command_win.go
@@ -11,14 +11,8 @@ import (
 
 var preExecHookFn = preExecHook
 
-// enables an information splash screen on Windows if the CLI is started from explorer.exe.
-var MousetrapHelpText string = `This is a command line tool
-
-You need to open cmd.exe and run it from there.
-`
-
 func preExecHook(c *Command) {
-	if mousetrap.StartedByExplorer() {
+	if MousetrapHelpText != "" && mousetrap.StartedByExplorer() {
 		c.Print(MousetrapHelpText)
 		time.Sleep(5 * time.Second)
 		os.Exit(1)