diff --git a/.gitmodules b/.gitmodules
index 2837583..2180a85 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -31,3 +31,9 @@
 [submodule "eris-python"]
 	path = eris-python
 	url = https://codeberg.org/eris/python-eris.git
+[submodule "eris-go"]
+	path = eris-go
+	url = https://codeberg.org/eris/eris-go.git
+[submodule "git-annex-backend-ERIS"]
+	path = git-annex-backend-ERIS
+	url = https://codeberg.org/eris/git-annex-backend-XERIS.git
diff --git a/eris-go b/eris-go
new file mode 160000
index 0000000..f98b774
--- /dev/null
+++ b/eris-go
@@ -0,0 +1 @@
+Subproject commit f98b7744b94d796cd6ccc2d180cd04c2ab6c7510
diff --git a/git-annex-backend-ERIS b/git-annex-backend-ERIS
new file mode 160000
index 0000000..00c45f9
--- /dev/null
+++ b/git-annex-backend-ERIS
@@ -0,0 +1 @@
+Subproject commit 00c45f99959c0e44567cd46bbc4cce356962f6d7