diff --git a/.gitmodules b/.gitmodules
index 2de1234..7209226 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -2,3 +2,6 @@
 	path = ChibiOS
 	url = https://github.com/ChibiOS/ChibiOS
 	branch = stable_20.3.x
+[submodule "ext/elua"]
+	path = ext/elua
+	url = https://github.com/elua/elua.git
diff --git a/ext/.gitignore b/ext/.gitignore
deleted file mode 100644
index 4f714ba..0000000
--- a/ext/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-elua/
diff --git a/ext/elua b/ext/elua
new file mode 160000
index 0000000..1940eca
--- /dev/null
+++ b/ext/elua
@@ -0,0 +1 @@
+Subproject commit 1940eca56bd84828916329d324731bb737ffda9b