diff --git a/.gitmodules b/.gitmodules
index b39060acb7b691d8ab4b642645b0b71bc987b8d8..48ec4809e9d90be72167958dc9f0e0baa0a48655 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -138,3 +138,6 @@
 	path = test/libdap-test
 	url = https://github.com/kelvinblockchain/libdap-test
 	branch = master
+[submodule "libdap-server-udp"]
+	path = libdap-server-udp
+	url = https://github.com/kelvinblockchain/libdap-server-udp
diff --git a/libdap-chain b/libdap-chain
index 4eee10b34200a1f0d27eec83e4bc0e451904cf7b..4831d2d5a4d282c668dc896584c8fed3162eac58 160000
--- a/libdap-chain
+++ b/libdap-chain
@@ -1 +1 @@
-Subproject commit 4eee10b34200a1f0d27eec83e4bc0e451904cf7b
+Subproject commit 4831d2d5a4d282c668dc896584c8fed3162eac58
diff --git a/libdap-chain-block b/libdap-chain-block
index 7d759fd2fa66d57b5926a5b3d1490df780448f27..94796d374bb02a3c7b68c081e73bfb0d7ff175eb 160000
--- a/libdap-chain-block
+++ b/libdap-chain-block
@@ -1 +1 @@
-Subproject commit 7d759fd2fa66d57b5926a5b3d1490df780448f27
+Subproject commit 94796d374bb02a3c7b68c081e73bfb0d7ff175eb
diff --git a/libdap-chain-dag b/libdap-chain-dag
index 0e95b6244b7bf6aedbbe76bc74f5f2cf397b9d04..54e44d53168f054917c3c64e753d2d20eaf2f15a 160000
--- a/libdap-chain-dag
+++ b/libdap-chain-dag
@@ -1 +1 @@
-Subproject commit 0e95b6244b7bf6aedbbe76bc74f5f2cf397b9d04
+Subproject commit 54e44d53168f054917c3c64e753d2d20eaf2f15a
diff --git a/libdap-chain-wallet b/libdap-chain-wallet
index 2a66d5eec990c39fb502770fe5ab970f8a474642..3690d7e0ad23ca7260dde4800f348c65747fdf6d 160000
--- a/libdap-chain-wallet
+++ b/libdap-chain-wallet
@@ -1 +1 @@
-Subproject commit 2a66d5eec990c39fb502770fe5ab970f8a474642
+Subproject commit 3690d7e0ad23ca7260dde4800f348c65747fdf6d
diff --git a/libdap-server-core b/libdap-server-core
index a7929cc7ea2f685bea0b9f055a913d8cc497de25..b37e5486884b9ee89c27b5f393fb6f04ed9c2835 160000
--- a/libdap-server-core
+++ b/libdap-server-core
@@ -1 +1 @@
-Subproject commit a7929cc7ea2f685bea0b9f055a913d8cc497de25
+Subproject commit b37e5486884b9ee89c27b5f393fb6f04ed9c2835
diff --git a/libdap-server-udp b/libdap-server-udp
new file mode 160000
index 0000000000000000000000000000000000000000..9b4cdb92b8015391ffe8b70ea1eac4bae60ba21a
--- /dev/null
+++ b/libdap-server-udp
@@ -0,0 +1 @@
+Subproject commit 9b4cdb92b8015391ffe8b70ea1eac4bae60ba21a
diff --git a/libdap-stream-ch-chain b/libdap-stream-ch-chain
index 986c1e7d55b08b78ae35a09faca24716ae5306c3..b6e8a6519e4aa3773a86e35186c28dcd953b1e51 160000
--- a/libdap-stream-ch-chain
+++ b/libdap-stream-ch-chain
@@ -1 +1 @@
-Subproject commit 986c1e7d55b08b78ae35a09faca24716ae5306c3
+Subproject commit b6e8a6519e4aa3773a86e35186c28dcd953b1e51