diff --git a/CMakeLists.txt b/CMakeLists.txt
index c0e0c3e7b02475f774c8af77fb2357ef530ef4f8..c5cf34602aaa7f36f14efea887950638fb7ea6f4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,7 +48,7 @@ SET( CPACK_GENERATOR "DEB")
 SET( CPACK_PACKAGE_NAME  "${PROJECT_NAME}")
 SET( CPACK_PACKAGE_VERSION_MAJOR 2)
 SET( CPACK_PACKAGE_VERSION_MINOR 6)
-SET( CPACK_PACKAGE_VERSION_PATCH 19)
+SET( CPACK_PACKAGE_VERSION_PATCH 20)
 
 SET( CPACK_SYSTEM_NAME "debian-9.9-amd64")
 SET( CPACK_PACKAGE_VERSION "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}-${CPACK_PACKAGE_VERSION_PATCH}")
diff --git a/libdap-chain b/libdap-chain
index d5b81b016f294fe03265285f5b5b332df908df72..36456ec60f2e64593066451b99ca65577e864b6a 160000
--- a/libdap-chain
+++ b/libdap-chain
@@ -1 +1 @@
-Subproject commit d5b81b016f294fe03265285f5b5b332df908df72
+Subproject commit 36456ec60f2e64593066451b99ca65577e864b6a
diff --git a/libdap-chain-net-srv b/libdap-chain-net-srv
index a6dff4037defa3bc0bf236957b5133d7e6918bd7..17a058bfd363eccc9f1619370b4d6b07e7af5ee1 160000
--- a/libdap-chain-net-srv
+++ b/libdap-chain-net-srv
@@ -1 +1 @@
-Subproject commit a6dff4037defa3bc0bf236957b5133d7e6918bd7
+Subproject commit 17a058bfd363eccc9f1619370b4d6b07e7af5ee1
diff --git a/libdap-chain-net-srv-vpn b/libdap-chain-net-srv-vpn
index c98116e36e8dec0d3ae720e93629df4c0014c8ba..b1ff5bef485770239be96610dd0218cfd5926424 160000
--- a/libdap-chain-net-srv-vpn
+++ b/libdap-chain-net-srv-vpn
@@ -1 +1 @@
-Subproject commit c98116e36e8dec0d3ae720e93629df4c0014c8ba
+Subproject commit b1ff5bef485770239be96610dd0218cfd5926424
diff --git a/libdap-stream-ch-chain-net-srv b/libdap-stream-ch-chain-net-srv
index 3dbf369d9302131021393411806bfc874e518f5c..74e2ddefd36de15758b375343b8b4f33c284f778 160000
--- a/libdap-stream-ch-chain-net-srv
+++ b/libdap-stream-ch-chain-net-srv
@@ -1 +1 @@
-Subproject commit 3dbf369d9302131021393411806bfc874e518f5c
+Subproject commit 74e2ddefd36de15758b375343b8b4f33c284f778