diff --git a/.gitmodules b/.gitmodules
index 2f10435..b259e13 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,3 +7,6 @@
 	path = vendor/upy-lib
 	url = https://github.com/micropython/micropython-lib.git
 	branch = "f20d89c6aad9443a696561ca2a01f7ef0c8fb302"
+[submodule "micropython"]
+	path = vendor/micropython
+	url = https://github.com/micropython/micropython.git
diff --git a/vendor/micropython b/vendor/micropython
new file mode 160000
index 0000000..3cd2c28
--- /dev/null
+++ b/vendor/micropython
@@ -0,0 +1 @@
+Subproject commit 3cd2c281d7cf990b3afb78287a58cf4ee3f23ca5