diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..674fb0c8
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "third_party/catapult"]
+	path = third_party/catapult
+	url = https://github.com/catapult-project/catapult.git
diff --git a/third_party/catapult b/third_party/catapult
new file mode 160000
index 00000000..d7f301be
--- /dev/null
+++ b/third_party/catapult
@@ -0,0 +1 @@
+Subproject commit d7f301be80d9243dbd4d5669a67811c7a7848807