diff --git a/.gitmodules b/.gitmodules
index fb53a08b..96309623 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -131,3 +131,7 @@
 	path = components/syn
 	url = https://github.com/nasa-itc/syn.git
 	branch = main
+[submodule "fsw/apps/hs"]
+	path = fsw/apps/hs
+	url = git@github.com:nasa-itc/HS.git
+	branch = master