diff --git a/eci.go b/eci.go
index 38289f1..6d6ef6c 100644
--- a/eci.go
+++ b/eci.go
@@ -74,6 +74,7 @@ var validEciRegions = []string{
 	"cn-shanghai",
 	"cn-beijing",
 	"us-west-1",
+	"ap-southeast-1",
 }
 
 // isValidECIRegion checks to make sure we're using a valid ECI region