diff --git a/go.mod b/go.mod
index 4ed000c..ca64d30 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,5 @@
 module github.com/cloud-barista/ktcloud-sdk-go
 
-go 1.17
+go 1.16
 
 require github.com/davecgh/go-spew v1.1.1