diff --git a/appended.go b/appended.go
index db8279c..38d78f9 100644
--- a/appended.go
+++ b/appended.go
@@ -15,6 +15,7 @@ import (
 type appendedBox struct {
 	Name  string                   // box name
 	Files map[string]*appendedFile // appended files (*zip.File) by full path
+	Time  time.Time
 }
 
 type appendedFile struct {
@@ -59,6 +60,7 @@ func init() {
 			box = &appendedBox{
 				Name:  boxName,
 				Files: make(map[string]*appendedFile),
+				Time:  f.ModTime(),
 			}
 			appendedBoxes[boxName] = box
 		}
@@ -71,8 +73,7 @@ func init() {
 			af.dir = true
 			af.dirInfo = &appendedDirInfo{
 				name: filepath.Base(af.zipFile.Name),
-				//++ TODO: use zip modtime when that is set correctly: af.zipFile.ModTime()
-				time: time.Now(),
+				time: af.zipFile.ModTime(),
 			}
 		} else {
 			// this is a file, we need it's contents so we can create a bytes.Reader when the file is opened
diff --git a/box.go b/box.go
index 71482e2..208b168 100644
--- a/box.go
+++ b/box.go
@@ -170,7 +170,9 @@ func (b *Box) Time() time.Time {
 		return b.embed.Time
 	}
 
-	//++ TODO: return time for appended box
+	if b.IsAppended() {
+		return b.appendd.Time
+	}
 
 	return time.Now()
 }
diff --git a/rice/append.go b/rice/append.go
index 8ab0130..80ab109 100644
--- a/rice/append.go
+++ b/rice/append.go
@@ -87,10 +87,12 @@ func operationAppend(pkgs []*build.Package) {
 				zipFileName := filepath.Join(appendedBoxName, strings.TrimPrefix(path, boxPath))
 				// write directories as empty file with comment "dir"
 				if info.IsDir() {
-					_, err := zipWriter.CreateHeader(&zip.FileHeader{
-						Name:    zipFileName,
-						Comment: "dir",
-					})
+					header := &zip.FileHeader{
+						Name:     zipFileName,
+						Comment:  "dir",
+					}
+					header.SetModTime(info.ModTime())
+					_, err := zipWriter.CreateHeader(header)
 					if err != nil {
 						fmt.Printf("Error creating dir in tmp zip: %s\n", err)
 						os.Exit(1)