diff --git a/lv.go b/lv.go
index 05e5c99..f0b51cc 100644
--- a/lv.go
+++ b/lv.go
@@ -122,9 +122,11 @@ func add() {
 		Created: time.Now().UnixMilli(),
 		Version: max + 1,
 	})
+
+	fmt.Println("meta:", meta)
+
 	storage.SaveMeta(util.ToHashHex(fullPath), meta)
 	storage.CopyData(fullPath, meta.Versions[len(meta.Versions)-1])
-	fmt.Println("version copied")
 }
 
 func del() {
diff --git a/util/hash.go b/util/hash.go
index abc2229..e7faeb3 100644
--- a/util/hash.go
+++ b/util/hash.go
@@ -1,12 +1,13 @@
 package util
 
 import (
-	"crypto/sha1"
-	"encoding/hex"
+	"crypto/md5"
+	"fmt"
+	"io"
 )
 
 func ToHashHex(filePath string) string {
-	s1 := sha1.New()
-	buf := s1.Sum([]byte(filePath))
-	return hex.EncodeToString(buf)
+	h := md5.New()
+	io.WriteString(h, filePath)
+	return fmt.Sprintf("%x", h.Sum(nil))
 }