diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..158c6121
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "scroll-contracts"]
+	path = scroll-contracts
+	url = https://github.com/scroll-tech/scroll-contracts.git
diff --git a/scroll-contracts b/scroll-contracts
new file mode 160000
index 00000000..8ff2948a
--- /dev/null
+++ b/scroll-contracts
@@ -0,0 +1 @@
+Subproject commit 8ff2948aa2b9cbd24a7644b060097765a6faee10