diff --git a/.gitmodules b/.gitmodules
index e748a8fd86915c8ffa774b133beb33c7b300c227..6408a33373ffb6974e2f403d9c0082b42c60e66c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -103,3 +103,6 @@
 [submodule "libdap-chain-cs-dag-pos"]
 	path = libdap-chain-cs-dag-pos
 	url = https://gitlab.demlabs.net/cellframe/libdap-chain-cs-dag-pos.git
+[submodule "libdap-chain-common"]
+	path = libdap-chain-common
+	url = https://gitlab.demlabs.net/cellframe/libdap-chain-common.git
diff --git a/libdap-chain-common b/libdap-chain-common
new file mode 160000
index 0000000000000000000000000000000000000000..dde4bb6403957dcbd2e0a983b36661ad303f5756
--- /dev/null
+++ b/libdap-chain-common
@@ -0,0 +1 @@
+Subproject commit dde4bb6403957dcbd2e0a983b36661ad303f5756