diff --git a/.gitmodules b/.gitmodules
index c1cd540..d125947 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -14,3 +14,6 @@
 [submodule "packages/leann-backend-hnsw/third_party/libzmq"]
 	path = packages/leann-backend-hnsw/third_party/libzmq
 	url = https://github.com/zeromq/libzmq.git
+[submodule "packages/astchunk-leann"]
+	path = packages/astchunk-leann
+	url = git@github.com:yichuan-w/astchunk-leann.git
diff --git a/thirdparty/astchunk-leann b/thirdparty/astchunk-leann
new file mode 160000
index 0000000..a453701
--- /dev/null
+++ b/thirdparty/astchunk-leann
@@ -0,0 +1 @@
+Subproject commit a4537018a329ba96f187b1d97c15abd1a04b8093