diff --git a/.gitmodules b/.gitmodules
index 297cf0e592a00c2dc7c1bc6d2eaa1a6c9ae20302..9a0f065809cfd10661552b3f603ec31170921a3e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "cpp/thirdparty/knowhere"]
 	path = cpp/thirdparty/knowhere
-	url = git@192.168.1.105:xiaojun.lin/knowhere.git
-	branch = develop
+	url = git@192.168.1.105:megasearch/knowhere.git
+	branch = branch-0.4.0
diff --git a/cpp/thirdparty/knowhere b/cpp/thirdparty/knowhere
new file mode 160000
index 0000000000000000000000000000000000000000..02550a43b5146bd7976b8b2b3fc37ca885d1e880
--- /dev/null
+++ b/cpp/thirdparty/knowhere
@@ -0,0 +1 @@
+Subproject commit 02550a43b5146bd7976b8b2b3fc37ca885d1e880