diff --git a/.gitmodules b/.gitmodules
index e27df003d77cbf6733ddb33c3decc699459bb7de..f31f256df596e3e938234d1081ac70db5c7d9780 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -61,3 +61,9 @@
 [submodule "libdap-python"]
 	path = libdap-python
 	url = https://gitlab.demlabs.net/cellframe/libdap-python.git
+[submodule "libdap-chain-net-srv-vpn"]
+	path = libdap-chain-net-srv-vpn
+	url = https://gitlab.demlabs.net/cellframe/libdap-chain-net-srv-vpn.git
+[submodule "libdap-server-http-db"]
+	path = libdap-server-http-db
+	url = https://gitlab.demlabs.net/cellframe/libdap-server-http-db.git
diff --git a/libdap-chain-net-srv-vpn b/libdap-chain-net-srv-vpn
new file mode 160000
index 0000000000000000000000000000000000000000..5dcc0643dff2e49129d0a49aab502ff0888e65d4
--- /dev/null
+++ b/libdap-chain-net-srv-vpn
@@ -0,0 +1 @@
+Subproject commit 5dcc0643dff2e49129d0a49aab502ff0888e65d4
diff --git a/libdap-server-http-db b/libdap-server-http-db
new file mode 160000
index 0000000000000000000000000000000000000000..f3f0b0ed919d37368e86210940ebb9de686879a1
--- /dev/null
+++ b/libdap-server-http-db
@@ -0,0 +1 @@
+Subproject commit f3f0b0ed919d37368e86210940ebb9de686879a1