diff --git a/cmd/sigil.go b/cmd/sigil.go
index 3be7404..a5d6a71 100644
--- a/cmd/sigil.go
+++ b/cmd/sigil.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"flag"
 	"fmt"
 	"io"
 	"os"
@@ -10,15 +9,16 @@ import (
 
 	"github.com/gliderlabs/sigil"
 	_ "github.com/gliderlabs/sigil/builtin"
+	flag "github.com/spf13/pflag"
 )
 
 var Version string
 
 var (
-	filename = flag.String("f", "", "use template file instead of STDIN")
-	inline   = flag.String("i", "", "use inline template string instead of STDIN")
-	posix    = flag.Bool("p", false, "preprocess with POSIX variable expansion")
-	version  = flag.Bool("v", false, "prints version")
+	filename = flag.StringP("filename", "f", "", "use template file instead of STDIN")
+	inline   = flag.StringP("inline", "i", "", "use inline template string instead of STDIN")
+	posix    = flag.BoolP("posix", "p", false, "preprocess with POSIX variable expansion")
+	version  = flag.BoolP("version", "v", false, "prints version")
 )
 
 func template() ([]byte, string, error) {
diff --git a/go.mod b/go.mod
index 5864b95..f57edf5 100644
--- a/go.mod
+++ b/go.mod
@@ -7,6 +7,7 @@ require (
 	github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568
 	github.com/jmespath/go-jmespath v0.4.0
 	github.com/mgood/go-posix v0.0.0-20150821180505-948c005421f5
+	github.com/spf13/pflag v1.0.5
 	gopkg.in/yaml.v2 v2.4.0
 )
 
diff --git a/go.sum b/go.sum
index e13030f..52cf7f6 100644
--- a/go.sum
+++ b/go.sum
@@ -14,6 +14,8 @@ github.com/mgood/go-posix v0.0.0-20150821180505-948c005421f5 h1:AutzcJSqc7ROMqcj
 github.com/mgood/go-posix v0.0.0-20150821180505-948c005421f5/go.mod h1:irVTeKOI2GrudEK6/mqR4dDlGH91lCZIZM34YKSKH7M=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=