diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..791fad23
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,9 @@
+[submodule "2.8.1"]
+	path = releases/svg-edit-2.8.1
+	url = https://github.com/SVG-Edit/svgedit
+    branch = release-v2.8.1
+
+[submodule "5.1.0"]
+	path = releases/svg-edit-5.1.0
+	url = https://github.com/SVG-Edit/svgedit
+    branch = release-v5.1.0