diff --git a/go.mod b/go.mod
index 54b9d99..b5e9706 100644
--- a/go.mod
+++ b/go.mod
@@ -9,9 +9,10 @@ require (
 	github.com/golangplus/fmt v0.0.0-20150411045040-2a5d6d7d2995 // indirect
 	github.com/golangplus/testing v0.0.0-20180327235837-af21d9c3145e // indirect
 	github.com/motemen/go-colorine v0.0.0-20180816141035-45d19169413a
-	github.com/saracen/walker v0.0.0-20191020095038-4d832ad28155
+	github.com/saracen/walker v0.0.0-20191030103630-c86836c89b0d
 	github.com/urfave/cli v1.20.0
 	golang.org/x/net v0.0.0-20190620200207-3b0461eec859
 	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
+	golang.org/x/sys v0.0.0-20191029155521-f43be2a4598c // indirect
 	golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7
 )
diff --git a/go.sum b/go.sum
index 64aa30b..d4cfc7c 100644
--- a/go.sum
+++ b/go.sum
@@ -12,6 +12,8 @@ github.com/motemen/go-colorine v0.0.0-20180816141035-45d19169413a h1:CONqI/36EjY
 github.com/motemen/go-colorine v0.0.0-20180816141035-45d19169413a/go.mod h1:PU2urRC7j30rrabSyp1MGGhyoiWSninPD8ckjzBSgkU=
 github.com/saracen/walker v0.0.0-20191020095038-4d832ad28155 h1:6cXEis177J1IafLIpOHbPmn8di/6nBECKDUc+Ulfo/Q=
 github.com/saracen/walker v0.0.0-20191020095038-4d832ad28155/go.mod h1:VYm6MDHqbAnTSqTpGgLKPoDhJrUXtknAIO6qQAiFwN4=
+github.com/saracen/walker v0.0.0-20191030103630-c86836c89b0d h1:k+brI8haJpvUV/MynREwYQV0n7jq1FkEayozuu4fgYM=
+github.com/saracen/walker v0.0.0-20191030103630-c86836c89b0d/go.mod h1:VYm6MDHqbAnTSqTpGgLKPoDhJrUXtknAIO6qQAiFwN4=
 github.com/urfave/cli v1.20.0 h1:fDqGv3UG/4jbVl/QkFwEdddtEDjh/5Ov6X+0B/3bPaw=
 github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
@@ -26,6 +28,8 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20191010194322-b09406accb47 h1:/XfQ9z7ib8eEJX2hdgFTZJ/ntt0swNk5oYBziWeTCvY=
 golang.org/x/sys v0.0.0-20191010194322-b09406accb47/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191029155521-f43be2a4598c h1:S/FtSvpNLtFBgjTqcKsRpsa6aVsI6iztaz1bQd9BJwE=
+golang.org/x/sys v0.0.0-20191029155521-f43be2a4598c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/tools v0.0.0-20191011211836-4c025a95b26e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7 h1:9zdDQZ7Thm29KFXgAX/+yaf3eVbP7djjWp/dXAppNCc=
diff --git a/local_repository.go b/local_repository.go
index 56235dd..163b3b5 100644
--- a/local_repository.go
+++ b/local_repository.go
@@ -10,6 +10,7 @@ import (
 
 	"github.com/Songmu/gitconfig"
 	"github.com/saracen/walker"
+	"golang.org/x/xerrors"
 )
 
 type LocalRepository struct {
@@ -57,7 +58,7 @@ func LocalRepositoryFromFullPath(fullPath string, backend *VCSBackend) (*LocalRe
 
 	return &LocalRepository{
 		FullPath:   fullPath,
-		RelPath:    relPath,
+		RelPath:    filepath.ToSlash(relPath),
 		RootPath:   root,
 		PathParts:  pathParts,
 		vcsBackend: backend,
@@ -202,44 +203,54 @@ func walkLocalRepositories(callback func(*LocalRepository)) error {
 	if err != nil {
 		return err
 	}
+
+	walkFn := func(fpath string, fi os.FileInfo) error {
+		isSymlink := false
+		if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
+			isSymlink = true
+			realpath, err := filepath.EvalSymlinks(fpath)
+			if err != nil {
+				return nil
+			}
+			fi, err = os.Stat(realpath)
+			if err != nil {
+				return nil
+			}
+		}
+		if !fi.IsDir() {
+			return nil
+		}
+		vcsBackend := findVCSBackend(fpath)
+		if vcsBackend == nil {
+			return nil
+		}
+
+		repo, err := LocalRepositoryFromFullPath(fpath, vcsBackend)
+		if err != nil || repo == nil {
+			return nil
+		}
+		callback(repo)
+
+		if isSymlink {
+			return nil
+		}
+		return filepath.SkipDir
+	}
+
+	errCb := walker.WithErrorCallback(func(pathname string, err error) error {
+		if os.IsPermission(xerrors.Unwrap(err)) {
+			return nil
+		}
+		return err
+	})
+
 	for _, root := range roots {
 		if _, err := os.Stat(root); err != nil {
-			if os.IsNotExist(err) {
+			if os.IsNotExist(err) || os.IsPermission(err) {
 				continue
 			}
 		}
-		if err := walker.Walk(root, func(fpath string, fi os.FileInfo) error {
-			isSymlink := false
-			if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
-				isSymlink = true
-				realpath, err := filepath.EvalSymlinks(fpath)
-				if err != nil {
-					return nil
-				}
-				fi, err = os.Stat(realpath)
-				if err != nil {
-					return nil
-				}
-			}
-			if !fi.IsDir() {
-				return nil
-			}
-			vcsBackend := findVCSBackend(fpath)
-			if vcsBackend == nil {
-				return nil
-			}
-
-			repo, err := LocalRepositoryFromFullPath(fpath, vcsBackend)
-			if err != nil || repo == nil {
-				return nil
-			}
-			callback(repo)
-
-			if isSymlink {
-				return nil
-			}
-			return filepath.SkipDir
-		}); err != nil {
+		if err := walker.Walk(root, walkFn, errCb); err != nil {
 			return err
 		}
 	}