diff --git a/.gitmodules b/.gitmodules
index d1f41c349a..9d2f15535e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -14,3 +14,6 @@
 	path = discower
 	url = git@github.com:DISCOWER/discower_asim.git
 	branch = main
+[submodule "submodules/px4"]
+	path = submodules/px4
+	url = git@github.com:DISCOWER/PX4-Space-Systems.git
diff --git a/submodules/px4 b/submodules/px4
new file mode 160000
index 0000000000..cbd7a9cd39
--- /dev/null
+++ b/submodules/px4
@@ -0,0 +1 @@
+Subproject commit cbd7a9cd39b970cc3537e788c1c8c68284c9d646