diff --git a/rpc_util.go b/rpc_util.go
index 9f0fb38d..09bf2d64 100644
--- a/rpc_util.go
+++ b/rpc_util.go
@@ -510,6 +510,6 @@ const SupportPackageIsVersion3 = true
 const SupportPackageIsVersion4 = true
 
 // Version is the current grpc version.
-const Version = "1.6.0-dev"
+const Version = "1.7.0-dev"
 
 const grpcUA = "grpc-go/" + Version