diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..8bbd3af
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "micropython"]
+	path = micropython
+	url = https://github.com/micropython/micropython.git
diff --git a/micropython b/micropython
new file mode 160000
index 0000000..3e25d61
--- /dev/null
+++ b/micropython
@@ -0,0 +1 @@
+Subproject commit 3e25d611ef3185b68558a20057d50b0d18dc67a0