diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..3680066ef
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "vendor/trezor-common"]
+	path = vendor/trezor-common
+	url = https://github.com/trezor/trezor-common.git
diff --git a/vendor/trezor-common b/vendor/trezor-common
new file mode 160000
index 000000000..66a85673e
--- /dev/null
+++ b/vendor/trezor-common
@@ -0,0 +1 @@
+Subproject commit 66a85673ed303f2cf48bdb3d027adbc7e8464364