diff --git a/example/basic/main.go b/example/basic/main.go
index 3a5724e..46af432 100644
--- a/example/basic/main.go
+++ b/example/basic/main.go
@@ -1,9 +1,10 @@
 package main
 
 import (
-	"../../"
 	"fmt"
 	"log"
+
+	"github.com/koyachi/go-nude"
 )
 
 func main() {
diff --git a/example/fillskinpixels/main.go b/example/fillskinpixels/main.go
index afe7cea..9a50d78 100644
--- a/example/fillskinpixels/main.go
+++ b/example/fillskinpixels/main.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"../../"
 	"fmt"
 	"image"
 	"image/color"
@@ -10,6 +9,8 @@ import (
 	"log"
 	"os"
 	"path/filepath"
+
+	"github.com/koyachi/go-nude"
 )
 
 func fillSkinPixels(imagePath string, regions nude.Regions) {
diff --git a/example/region/main.go b/example/region/main.go
index 1de6018..62b27e4 100644
--- a/example/region/main.go
+++ b/example/region/main.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"../../"
 	"fmt"
 	"image"
 	"image/color"
@@ -10,6 +9,8 @@ import (
 	"log"
 	"os"
 	"path/filepath"
+
+	"github.com/koyachi/go-nude"
 )
 
 func drawImageAndRegions(imagePath string, regions nude.Regions) {
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..161978f
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/koyachi/go-nude
+
+go 1.20
diff --git a/nude.go b/nude.go
index 24b525c..d5137fd 100644
--- a/nude.go
+++ b/nude.go
@@ -27,7 +27,7 @@ func IsFileNude(imageFilePath string) (bool, error) {
 }
 
 func IsImageNude(img image.Image) (bool, error) {
-	d:= NewDetector(img)
+	d := NewDetector(img)
 	return d.Parse()
 }
 
@@ -47,7 +47,7 @@ type Detector struct {
 }
 
 func NewDetector(img image.Image) *Detector {
-	d := &Detector{image: img }
+	d := &Detector{image: img}
 	return d
 }