README   | 4 +++-
 dep.go   | 9 ++++-----
 go.mod   | 2 +-
 usage.go | 2 +-

diff --git a/README b/README
index 21b111e479d341fdb30d1c7b2ccc8ec5a71162db5476c66c7f157059003f2eb0..9f713d693b166a4800566266734ef2d165c501b5595f966b3d90319d2273488f 100644
--- a/README
+++ b/README
@@ -16,6 +16,8 @@ goredo is free software: see the file COPYING for copying conditions.
 Home page: http://www.goredo.cypherpunks.ru/
 
 INSTALL                                                 *goredo-install*
+
+Hopefully it should work on all POSIX systems.
  >
     $ go get go.cypherpunks.ru/goredo
     $ goredo -symlinks
@@ -28,7 +30,7 @@ problems with the authenticity on your side, then build it manually: >
 
     $ git clone git://git.cypherpunks.ru/goredo.git
     $ cd goredo
-    $ git tag -v v0.7.1
+    $ git tag -v v0.8.0
     $ git clone git://git.cypherpunks.ru/gorecfile.git
     $ ( cd gorecfile ; git tag -v v0.4.0 )
     $ echo "replace go.cypherpunks.ru/recfile => `pwd`/gorecfile" >> go.mod
diff --git a/dep.go b/dep.go
index 0496be964a3f8e4df1ecbdd3b7aed33e7d95759e3c923a115d0eae61d4756d60..4d7ca236b5b9feea889d5cd049f2dc12c3af10c78ccbc2cc9e53d69f5313ced9 100644
--- a/dep.go
+++ b/dep.go
@@ -28,10 +28,10 @@ 	"io"
 	"os"
 	"path"
 	"strings"
-	"syscall"
 
 	"go.cypherpunks.ru/recfile"
 	"golang.org/x/crypto/blake2b"
+	"golang.org/x/sys/unix"
 )
 
 func recfileWrite(fdDep *os.File, fields ...recfile.Field) error {
@@ -74,12 +74,11 @@ 	)
 }
 
 func fileCtime(fd *os.File) (string, error) {
-	fi, err := fd.Stat()
-	if err != nil {
+	var stat unix.Stat_t
+	if err := unix.Fstat(int(fd.Fd()), &stat); err != nil {
 		return "", err
 	}
-	stat := fi.Sys().(*syscall.Stat_t)
-	sec, nsec := stat.Ctimespec.Unix()
+	sec, nsec := stat.Ctim.Unix()
 	return fmt.Sprintf("%d.%d", sec, nsec), nil
 }
 
diff --git a/go.mod b/go.mod
index bf5e048b8a0958ce900d74dfe37c7d9d078c251b105db0e03507c117894d7a20..612a82c3002e40353861b8ce192e166757ec96aad0e2f4484401b349cb651ce0 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module go.cypherpunks.ru/goredo
 
-go 1.14
+go 1.12
 
 require (
 	go.cypherpunks.ru/recfile v0.4.0
diff --git a/usage.go b/usage.go
index a011d4a7d0373c26bd9491d9517f488173386cb8aab43f718d607ac62546e5d3..d44722db3a86e8e0f538bac1249596b790fdad3219893779b2a302fd8258212e 100644
--- a/usage.go
+++ b/usage.go
@@ -26,7 +26,7 @@ 	"strings"
 )
 
 const (
-	Version  = "0.7.1"
+	Version  = "0.8.0"
 	Warranty = `This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, version 3 of the License.