diff --git a/.gitmodules b/.gitmodules
index fc70e9f2..24839421 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -31,3 +31,7 @@
 [submodule "deps/rapidjson"]
 	path = deps/rapidjson
 	url = https://github.com/Tencent/rapidjson.git
+[submodule "deps/gsc-tool"]
+	path = deps/gsc-tool
+	url = https://github.com/Joelrau/gsc-tool.git
+	branch = iw7
diff --git a/deps/gsc-tool b/deps/gsc-tool
new file mode 160000
index 00000000..3152d366
--- /dev/null
+++ b/deps/gsc-tool
@@ -0,0 +1 @@
+Subproject commit 3152d3664dedd949e83889b0a8b448029be88370