diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000000..2798272a3f5
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,15 @@
+[submodule "installer"]
+	path = installer
+	url = git@github.com:geonetwork/core-installer.git
+[submodule "gast"]
+	path = gast
+	url = git@github.com:geonetwork/core-gast.git
+[submodule "maven_repo"]
+	path = maven_repo
+	url = git@github.com:geonetwork/core-maven-repo.git
+[submodule "release"]
+	path = release
+	url = git@github.com:geonetwork/core-release.git
+[submodule "docs"]
+	path = docs
+	url = git@github.com:geonetwork/core-doc-sources.git