diff --git a/.gx/lastpubver b/.gx/lastpubver
index c6518a5e6d5af55416248874dbbb17e6d5a0d196..01443f197262131da982a172dbabb24f1c36bfee 100644
--- a/.gx/lastpubver
+++ b/.gx/lastpubver
@@ -1 +1 @@
-1.0.0: QmUe7hFx8ACivDWe1pF6X2ZTihGfeXppMc1aPjNBJ8cCHv
+1.0.1: QmWkSGjYAhLbHFiq8bA73xA67EG3p6ERovd2ad8c7cmbxK
diff --git a/car.go b/car.go
index dfac121097f9f105d7ceca59cc6b3bab3507accd..3f1996aac5182c32a5d51424f2d60582f6b6a63f 100644
--- a/car.go
+++ b/car.go
@@ -117,6 +117,7 @@ func (cw *carWriter) writeNode(ctx context.Context, nd format.Node) error {
 	hdr := &tar.Header{
 		Name:     nd.Cid().String(),
 		Typeflag: tar.TypeReg,
+		Size:     int64(len(nd.RawData())),
 	}
 
 	if err := cw.tw.WriteHeader(hdr); err != nil {
diff --git a/package.json b/package.json
index 035e189d06277c772055622825934f5030dab721..4c938e327016241539a10bf54dc0b490fd74fdef 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,6 @@
   "license": "",
   "name": "go-car",
   "releaseCmd": "git commit -a -m \"gx publish $VERSION\"",
-  "version": "1.0.0"
+  "version": "1.0.1"
 }