diff --git a/.travis.yml b/.travis.yml
index b4e8903..c43927f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,14 +1,9 @@
 language: go
 
-go:
-  - "1.15.x"
-  - "1.16.x"
-  - "1.17.x"
-
 jobs:
   include:
-    - arch: ppc64le
-      go: 1.17.x
+#    - arch: ppc64le
+#      go: 1.17.x
     - arch: arm64-graviton2
       virt: vm
       os: linux
@@ -21,7 +16,7 @@ install:
   - go mod download
 
 script:
-  - go test -v ./...
+  - go test -v -short ./...
 
 #after_success:
 #  - go test -v -short -bench . -run=^$ ./...
diff --git a/README.md b/README.md
index d67dbd4..fdb9f95 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 
 # GM-Standards SM2/SM3/SM4 for Go
 
-<a href="https://github.com/emmansun/gmsm/actions?query=workflow%3Aci+branch%3Amain"><img src="https://github.com/emmansun/gmsm/workflows/ci/badge.svg" alt="CI" style="max-width: 100%;"></a> [![Documentation](https://godoc.org/github.com/emmansun/gmsm?status.svg)](https://godoc.org/github.com/emmansun/gmsm) [![Release](https://img.shields.io/github/release/emmansun/gmsm/all.svg)](https://github.com/emmansun/gmsm/releases)
+[![Tavis CI Status](https://travis-ci.com/emmansun/gmsm.svg?branch=main)](https://travis-ci.com/emmansun/gmsm) <a href="https://github.com/emmansun/gmsm/actions?query=workflow%3Aci+branch%3Amain"><img src="https://github.com/emmansun/gmsm/workflows/ci/badge.svg" alt="CI" style="max-width: 100%;"></a> [![Documentation](https://godoc.org/github.com/emmansun/gmsm?status.svg)](https://godoc.org/github.com/emmansun/gmsm) [![Release](https://img.shields.io/github/release/emmansun/gmsm/all.svg)](https://github.com/emmansun/gmsm/releases)
 
 This is a **SM2 sm2p256v1** implementation whose performance is similar like golang native NIST P256 under **amd64** and **arm64**, for implementation detail, please refer [SM2实现细节](https://github.com/emmansun/gmsm/wiki/SM2%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96).