diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index d4d962319..18180076e 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -77,15 +77,15 @@
 		},
 		{
 			"ImportPath": "github.com/denverdino/aliyungo/oss",
-			"Rev": "f192209bcca7a2221ea0b100bf4569f484654d43"
+			"Rev": "6ffb587da9da6d029d0ce517b85fecc82172d502"
 		},
 		{
 			"ImportPath": "github.com/denverdino/aliyungo/util",
-			"Rev": "f192209bcca7a2221ea0b100bf4569f484654d43"
+			"Rev": "6ffb587da9da6d029d0ce517b85fecc82172d502"
 		},
 		{
 			"ImportPath": "github.com/denverdino/aliyungo/common",
-			"Rev": "f192209bcca7a2221ea0b100bf4569f484654d43"
+			"Rev": "6ffb587da9da6d029d0ce517b85fecc82172d502"
 		},
 		{
 			"ImportPath": "github.com/docker/docker/pkg/tarsum",
diff --git a/Godeps/_workspace/src/github.com/denverdino/aliyungo/common/request.go b/Godeps/_workspace/src/github.com/denverdino/aliyungo/common/request.go
index 5f7f15afd..2a883f19b 100644
--- a/Godeps/_workspace/src/github.com/denverdino/aliyungo/common/request.go
+++ b/Godeps/_workspace/src/github.com/denverdino/aliyungo/common/request.go
@@ -52,7 +52,7 @@ type ErrorResponse struct {
 	Message string
 }
 
-// An Error represents a custom error for ECS failure response
+// An Error represents a custom error for Aliyun API failure response
 type Error struct {
 	ErrorResponse
 	StatusCode int //Status Code of HTTP Response
diff --git a/Godeps/_workspace/src/github.com/denverdino/aliyungo/oss/client.go b/Godeps/_workspace/src/github.com/denverdino/aliyungo/oss/client.go
index 7a901ba98..ac3e8f029 100644
--- a/Godeps/_workspace/src/github.com/denverdino/aliyungo/oss/client.go
+++ b/Godeps/_workspace/src/github.com/denverdino/aliyungo/oss/client.go
@@ -1131,7 +1131,7 @@ type Error struct {
 }
 
 func (e *Error) Error() string {
-	return e.Message
+	return fmt.Sprintf("Aliyun API Error: RequestId: %s Status Code: %d Code: %s Message: %s", e.RequestId, e.StatusCode, e.Code, e.Message)
 }
 
 func (client *Client) buildError(r *http.Response) error {