diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..2d96d0d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "tools/yscope-dev-utils"]
+	path = tools/yscope-dev-utils
+	url = https://github.com/y-scope/yscope-dev-utils.git
diff --git a/tools/yscope-dev-utils b/tools/yscope-dev-utils
new file mode 160000
index 0000000..c1593f7
--- /dev/null
+++ b/tools/yscope-dev-utils
@@ -0,0 +1 @@
+Subproject commit c1593f7414112f2b6e0bf46595126c8edeffe106