diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..37f1ffda
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "third_party/shirakami"]
+	path = third_party/shirakami
+	url = https://github.com/thawk105/shirakami.git
diff --git a/third_party/shirakami b/third_party/shirakami
new file mode 160000
index 00000000..fb14e659
--- /dev/null
+++ b/third_party/shirakami
@@ -0,0 +1 @@
+Subproject commit fb14e6597ecf7cc206af8f3424ca22503bb1e17d