diff --git a/cmd/restic/cmd_backup.go b/cmd/restic/cmd_backup.go
index abf392e73..5620e88e9 100644
--- a/cmd/restic/cmd_backup.go
+++ b/cmd/restic/cmd_backup.go
@@ -246,6 +246,17 @@ func readBackupFromStdin(opts BackupOptions, gopts GlobalOptions, args []string)
 		return errors.Fatal("filename is invalid (may not contain a directory, slash or backslash)")
 	}
 
+	var t time.Time
+	if opts.TimeStamp != "" {
+		parsedT, err := time.Parse("2006-01-02 15:04:05", opts.TimeStamp)
+		if err != nil {
+			return err
+		}
+		t = parsedT
+	} else {
+		t = time.Now()
+	}
+
 	if gopts.password == "" {
 		return errors.Fatal("unable to read password from stdin when data is to be read from stdin, use --password-file or $RESTIC_PASSWORD")
 	}
@@ -270,6 +281,7 @@ func readBackupFromStdin(opts BackupOptions, gopts GlobalOptions, args []string)
 		Repository: repo,
 		Tags:       opts.Tags,
 		Hostname:   opts.Hostname,
+		TimeStamp:  t,
 	}
 
 	_, id, err := r.Archive(gopts.ctx, fn, os.Stdin, newArchiveStdinProgress(gopts))
diff --git a/internal/archiver/archive_reader.go b/internal/archiver/archive_reader.go
index eb8f384fc..fa00a7406 100644
--- a/internal/archiver/archive_reader.go
+++ b/internal/archiver/archive_reader.go
@@ -17,8 +17,9 @@ import (
 type Reader struct {
 	restic.Repository
 
-	Tags     []string
-	Hostname string
+	Tags      []string
+	Hostname  string
+	TimeStamp time.Time
 }
 
 // Archive reads data from the reader and saves it to the repo.
@@ -26,9 +27,8 @@ func (r *Reader) Archive(ctx context.Context, name string, rd io.Reader, p *rest
 	if name == "" {
 		return nil, restic.ID{}, errors.New("no filename given")
 	}
-
 	debug.Log("start archiving %s", name)
-	sn, err := restic.NewSnapshot([]string{name}, r.Tags, r.Hostname, time.Now())
+	sn, err := restic.NewSnapshot([]string{name}, r.Tags, r.Hostname, r.TimeStamp)
 	if err != nil {
 		return nil, restic.ID{}, err
 	}