diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..7c79c718
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "mps-unification"]
+	path = solutions/jetbrains.mps.unification/imports/mps-unification
+	url = git@github.com:fisakov/mps-unification.git
diff --git a/solutions/jetbrains.mps.unification/imports/mps-unification b/solutions/jetbrains.mps.unification/imports/mps-unification
new file mode 160000
index 00000000..64df74ef
--- /dev/null
+++ b/solutions/jetbrains.mps.unification/imports/mps-unification
@@ -0,0 +1 @@
+Subproject commit 64df74ef73eb997331c57c4389141479ffe84cdf