diff --git a/README.md b/README.md
index f2d9192..12e411f 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ SDK list for Milvus:
 - [C++ SDK](https://github.com/milvus-io/milvus-sdk-cpp)
 - [Go SDK](https://github.com/milvus-io/milvus-sdk-go)
 - [Node SDK](https://github.com/milvus-io/milvus-sdk-node)
+- [C# SDK](https://github.com/milvus-io/milvus-sdk-csharp)
 
 
 # Usage
@@ -48,4 +49,4 @@ When we implement a new feature with new API, the following steps are recommende
 2. implement the new API make sure the API can be invoked
 3. sync the modification to the milvus-proto, submit a commit
 4. in SDK project, sync the milvus-proto submodule to the commit and submit a commit
-5. develop SDK and main project parallelly
\ No newline at end of file
+5. develop SDK and main project parallelly