diff --git a/README.md b/README.md
index 3102c46d..c1ae1859 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ Go SDK for [Milvus](https://github.com/milvus-io/milvus). To contribute code to
 
 |Milvus version| Recommended Go SDK version |
 |:-----:|:-----:|
+| 2.2.x | [2.2.2](https://github.com/milvus-io/milvus-sdk-go/tree/v2.2.2) |
 | 2.1.0 | [2.1.0](https://github.com/milvus-io/milvus-sdk-go/tree/v2.1.0) |
 | 2.0.0 | [2.0.0](https://github.com/milvus-io/milvus-sdk-go/tree/v2.0.0) |
 | 1.1.x | [1.1.0](https://github.com/milvus-io/milvus-sdk-go/tree/v1.1.0) |
@@ -53,7 +54,7 @@ Go 1.15 or higher
 
 ### API Documentation
 
-Refer to [https://godoc.org/github.com/milvus-io/milvus-sdk-go/v2](https://godoc.org/github.com/milvus-io/milvus-sdk-go/v2) for the GO SDK API documentation.
+Refer to [https://milvus.io/api-reference/go/v2.2.x/About.md](https://milvus.io/api-reference/go/v2.2.x/About.md) for the Go SDK API documentation.
 
 ### Examples