diff --git a/.gitmodules b/.gitmodules
index 91b5ef3..0d903ad 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,7 @@
 	path = src/livox_ros_driver2
 	url = https://github.com/tu-darmstadt-ros-pkg/livox_ros_driver2
 	branch = jazzy
+[submodule "src/FAST_LIO"]
+	path = src/FAST_LIO
+	url = https://github.com/Ericsii/FAST_LIO.git
+	branch = ros2
diff --git a/src/FAST_LIO b/src/FAST_LIO
new file mode 160000
index 0000000..f203153
--- /dev/null
+++ b/src/FAST_LIO
@@ -0,0 +1 @@
+Subproject commit f20315319d194d003e3b6d4f406958f38156e812