diff --git a/README.md b/README.md
index d4b203b..1abb695 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,13 @@ different metadata
 Changes
 =======
 
+v0.4
+----
+
+* update code to be compatible with CDT 1.6.1
+* add checks for invalid amounts
+* allow EOS to be sent without invoking `buynft` by setting memo to "deposit"
+
 
 v0.3beta
 --------
diff --git "a/dGoods_spec_\344\270\255\346\226\207.md" "b/dGoods_spec_\344\270\255\346\226\207.md"
index 0cf5ad0..10028b3 100644
--- "a/dGoods_spec_\344\270\255\346\226\207.md"
+++ "b/dGoods_spec_\344\270\255\346\226\207.md"
@@ -1,4 +1,4 @@
-dGoods: 虚拟物品代币规范 v0.3 beta
+dGoods: 虚拟物品代币规范 v0.4 beta
 =====================================
 Cameron Thacker, Stephan Cunningham, Rudy Koch, John Linden
 [译:TokenPocket](https://www.tokenpocket.pro/) 
diff --git a/dgoods_spec.md b/dgoods_spec.md
index ee3f58f..8d4dd52 100644
--- a/dgoods_spec.md
+++ b/dgoods_spec.md
@@ -1,4 +1,4 @@
-dGoods: Digital Goods Token Spec v0.3beta
+dGoods: Digital Goods Token Spec v0.4beta
 =====================================
 
 Cameron Thacker, Stephan Cunningham, Rudy Koch, John Linden