diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..ea3adf1
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "shared-modules"]
+	path = shared-modules
+	url = https://github.com/flathub/shared-modules
diff --git a/shared-modules b/shared-modules
new file mode 160000
index 0000000..ca1664c
--- /dev/null
+++ b/shared-modules
@@ -0,0 +1 @@
+Subproject commit ca1664c5d1d94899432f364f006c582898afbae2