diff --git a/Gopkg.lock b/Gopkg.lock
index d7890af..9a15d63 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -1,12 +1,6 @@
 # This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 
 
-[[projects]]
-  name = "github.com/codegangsta/cli"
-  packages = ["."]
-  revision = "cfb38830724cc34fedffe9a2a29fb54fa9169cd1"
-  version = "v1.20.0"
-
 [[projects]]
   branch = "master"
   name = "github.com/dustin/go-humanize"
@@ -67,6 +61,12 @@
   revision = "f006c2ac4710855cf0f916dd6b77acf6b048dc6e"
   version = "v1.0.3"
 
+[[projects]]
+  name = "github.com/urfave/cli"
+  packages = ["."]
+  revision = "cfb38830724cc34fedffe9a2a29fb54fa9169cd1"
+  version = "v1.20.0"
+
 [[projects]]
   name = "github.com/yudai/gotty"
   packages = ["pkg/homedir"]
@@ -106,6 +106,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "8ee0066f90aab988cd1553eedcde5f62c9d2a9d3c18d2a4ea0a57a85df4b2eab"
+  inputs-digest = "f8ef1cfe7bc4581e86cff48f7b1d070246e97b9d49fcf6d30a4421e5b3bfaf75"
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/common/flags.go b/common/flags.go
index d4784f7..a3d0ac1 100644
--- a/common/flags.go
+++ b/common/flags.go
@@ -7,7 +7,7 @@ import (
 	"reflect"
 	"strings"
 
-	"github.com/codegangsta/cli"
+	"github.com/urfave/cli"
 	"github.com/fatih/structs"
 	"github.com/yudai/hcl"
 
diff --git a/main.go b/main.go
index 7038da5..e8eee9f 100644
--- a/main.go
+++ b/main.go
@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"os"
 	"strings"
-	"github.com/codegangsta/cli"
+	"github.com/urfave/cli"
 	"github.com/yudai/gotty/pkg/homedir"
 	"github.com/smileboywtu/croc/common"
 )
@@ -52,7 +52,7 @@ func main() {
 	if err != nil {
 		exit(err, 3)
 	}
-
+	
 	app.Flags = append(
 		cliFlags,
 		cli.StringFlag{
diff --git a/vendor/github.com/codegangsta/cli/.flake8 b/vendor/github.com/urfave/cli/.flake8
similarity index 100%
rename from vendor/github.com/codegangsta/cli/.flake8
rename to vendor/github.com/urfave/cli/.flake8
diff --git a/vendor/github.com/codegangsta/cli/.gitignore b/vendor/github.com/urfave/cli/.gitignore
similarity index 100%
rename from vendor/github.com/codegangsta/cli/.gitignore
rename to vendor/github.com/urfave/cli/.gitignore
diff --git a/vendor/github.com/codegangsta/cli/.travis.yml b/vendor/github.com/urfave/cli/.travis.yml
similarity index 100%
rename from vendor/github.com/codegangsta/cli/.travis.yml
rename to vendor/github.com/urfave/cli/.travis.yml
diff --git a/vendor/github.com/codegangsta/cli/CHANGELOG.md b/vendor/github.com/urfave/cli/CHANGELOG.md
similarity index 100%
rename from vendor/github.com/codegangsta/cli/CHANGELOG.md
rename to vendor/github.com/urfave/cli/CHANGELOG.md
diff --git a/vendor/github.com/codegangsta/cli/LICENSE b/vendor/github.com/urfave/cli/LICENSE
similarity index 100%
rename from vendor/github.com/codegangsta/cli/LICENSE
rename to vendor/github.com/urfave/cli/LICENSE
diff --git a/vendor/github.com/codegangsta/cli/README.md b/vendor/github.com/urfave/cli/README.md
similarity index 100%
rename from vendor/github.com/codegangsta/cli/README.md
rename to vendor/github.com/urfave/cli/README.md
diff --git a/vendor/github.com/codegangsta/cli/altsrc/altsrc.go b/vendor/github.com/urfave/cli/altsrc/altsrc.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/altsrc.go
rename to vendor/github.com/urfave/cli/altsrc/altsrc.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/flag.go b/vendor/github.com/urfave/cli/altsrc/flag.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/flag.go
rename to vendor/github.com/urfave/cli/altsrc/flag.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/flag_generated.go b/vendor/github.com/urfave/cli/altsrc/flag_generated.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/flag_generated.go
rename to vendor/github.com/urfave/cli/altsrc/flag_generated.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/flag_test.go b/vendor/github.com/urfave/cli/altsrc/flag_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/flag_test.go
rename to vendor/github.com/urfave/cli/altsrc/flag_test.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/helpers_test.go b/vendor/github.com/urfave/cli/altsrc/helpers_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/helpers_test.go
rename to vendor/github.com/urfave/cli/altsrc/helpers_test.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/input_source_context.go b/vendor/github.com/urfave/cli/altsrc/input_source_context.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/input_source_context.go
rename to vendor/github.com/urfave/cli/altsrc/input_source_context.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/map_input_source.go b/vendor/github.com/urfave/cli/altsrc/map_input_source.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/map_input_source.go
rename to vendor/github.com/urfave/cli/altsrc/map_input_source.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/toml_command_test.go b/vendor/github.com/urfave/cli/altsrc/toml_command_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/toml_command_test.go
rename to vendor/github.com/urfave/cli/altsrc/toml_command_test.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/toml_file_loader.go b/vendor/github.com/urfave/cli/altsrc/toml_file_loader.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/toml_file_loader.go
rename to vendor/github.com/urfave/cli/altsrc/toml_file_loader.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/yaml_command_test.go b/vendor/github.com/urfave/cli/altsrc/yaml_command_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/yaml_command_test.go
rename to vendor/github.com/urfave/cli/altsrc/yaml_command_test.go
diff --git a/vendor/github.com/codegangsta/cli/altsrc/yaml_file_loader.go b/vendor/github.com/urfave/cli/altsrc/yaml_file_loader.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/altsrc/yaml_file_loader.go
rename to vendor/github.com/urfave/cli/altsrc/yaml_file_loader.go
diff --git a/vendor/github.com/codegangsta/cli/app.go b/vendor/github.com/urfave/cli/app.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/app.go
rename to vendor/github.com/urfave/cli/app.go
diff --git a/vendor/github.com/codegangsta/cli/app_test.go b/vendor/github.com/urfave/cli/app_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/app_test.go
rename to vendor/github.com/urfave/cli/app_test.go
diff --git a/vendor/github.com/codegangsta/cli/appveyor.yml b/vendor/github.com/urfave/cli/appveyor.yml
similarity index 100%
rename from vendor/github.com/codegangsta/cli/appveyor.yml
rename to vendor/github.com/urfave/cli/appveyor.yml
diff --git a/vendor/github.com/codegangsta/cli/autocomplete/bash_autocomplete b/vendor/github.com/urfave/cli/autocomplete/bash_autocomplete
similarity index 100%
rename from vendor/github.com/codegangsta/cli/autocomplete/bash_autocomplete
rename to vendor/github.com/urfave/cli/autocomplete/bash_autocomplete
diff --git a/vendor/github.com/codegangsta/cli/autocomplete/zsh_autocomplete b/vendor/github.com/urfave/cli/autocomplete/zsh_autocomplete
similarity index 100%
rename from vendor/github.com/codegangsta/cli/autocomplete/zsh_autocomplete
rename to vendor/github.com/urfave/cli/autocomplete/zsh_autocomplete
diff --git a/vendor/github.com/codegangsta/cli/category.go b/vendor/github.com/urfave/cli/category.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/category.go
rename to vendor/github.com/urfave/cli/category.go
diff --git a/vendor/github.com/codegangsta/cli/cli.go b/vendor/github.com/urfave/cli/cli.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/cli.go
rename to vendor/github.com/urfave/cli/cli.go
diff --git a/vendor/github.com/codegangsta/cli/command.go b/vendor/github.com/urfave/cli/command.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/command.go
rename to vendor/github.com/urfave/cli/command.go
diff --git a/vendor/github.com/codegangsta/cli/command_test.go b/vendor/github.com/urfave/cli/command_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/command_test.go
rename to vendor/github.com/urfave/cli/command_test.go
diff --git a/vendor/github.com/codegangsta/cli/context.go b/vendor/github.com/urfave/cli/context.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/context.go
rename to vendor/github.com/urfave/cli/context.go
diff --git a/vendor/github.com/codegangsta/cli/context_test.go b/vendor/github.com/urfave/cli/context_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/context_test.go
rename to vendor/github.com/urfave/cli/context_test.go
diff --git a/vendor/github.com/codegangsta/cli/errors.go b/vendor/github.com/urfave/cli/errors.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/errors.go
rename to vendor/github.com/urfave/cli/errors.go
diff --git a/vendor/github.com/codegangsta/cli/errors_test.go b/vendor/github.com/urfave/cli/errors_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/errors_test.go
rename to vendor/github.com/urfave/cli/errors_test.go
diff --git a/vendor/github.com/codegangsta/cli/flag-types.json b/vendor/github.com/urfave/cli/flag-types.json
similarity index 100%
rename from vendor/github.com/codegangsta/cli/flag-types.json
rename to vendor/github.com/urfave/cli/flag-types.json
diff --git a/vendor/github.com/codegangsta/cli/flag.go b/vendor/github.com/urfave/cli/flag.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/flag.go
rename to vendor/github.com/urfave/cli/flag.go
diff --git a/vendor/github.com/codegangsta/cli/flag_generated.go b/vendor/github.com/urfave/cli/flag_generated.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/flag_generated.go
rename to vendor/github.com/urfave/cli/flag_generated.go
diff --git a/vendor/github.com/codegangsta/cli/flag_test.go b/vendor/github.com/urfave/cli/flag_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/flag_test.go
rename to vendor/github.com/urfave/cli/flag_test.go
diff --git a/vendor/github.com/codegangsta/cli/funcs.go b/vendor/github.com/urfave/cli/funcs.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/funcs.go
rename to vendor/github.com/urfave/cli/funcs.go
diff --git a/vendor/github.com/codegangsta/cli/generate-flag-types b/vendor/github.com/urfave/cli/generate-flag-types
similarity index 100%
rename from vendor/github.com/codegangsta/cli/generate-flag-types
rename to vendor/github.com/urfave/cli/generate-flag-types
diff --git a/vendor/github.com/codegangsta/cli/help.go b/vendor/github.com/urfave/cli/help.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/help.go
rename to vendor/github.com/urfave/cli/help.go
diff --git a/vendor/github.com/codegangsta/cli/help_test.go b/vendor/github.com/urfave/cli/help_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/help_test.go
rename to vendor/github.com/urfave/cli/help_test.go
diff --git a/vendor/github.com/codegangsta/cli/helpers_test.go b/vendor/github.com/urfave/cli/helpers_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/helpers_test.go
rename to vendor/github.com/urfave/cli/helpers_test.go
diff --git a/vendor/github.com/codegangsta/cli/helpers_unix_test.go b/vendor/github.com/urfave/cli/helpers_unix_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/helpers_unix_test.go
rename to vendor/github.com/urfave/cli/helpers_unix_test.go
diff --git a/vendor/github.com/codegangsta/cli/helpers_windows_test.go b/vendor/github.com/urfave/cli/helpers_windows_test.go
similarity index 100%
rename from vendor/github.com/codegangsta/cli/helpers_windows_test.go
rename to vendor/github.com/urfave/cli/helpers_windows_test.go
diff --git a/vendor/github.com/codegangsta/cli/runtests b/vendor/github.com/urfave/cli/runtests
similarity index 100%
rename from vendor/github.com/codegangsta/cli/runtests
rename to vendor/github.com/urfave/cli/runtests