diff --git a/CMakeLists.txt b/CMakeLists.txt
index 621ed6bf7de69fa89669d57b7f0ddf798f700175..17567efca9aa2476dbd91fec861bb27682e0b5b5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ set(CMAKE_C_STANDARD 11)
 SET( CPACK_PACKAGE_NAME  "${PROJECT_NAME}")
 SET( CPACK_PACKAGE_VERSION_MAJOR 4)
 SET( CPACK_PACKAGE_VERSION_MINOR 4)
-SET( CPACK_PACKAGE_VERSION_PATCH 49)
+SET( CPACK_PACKAGE_VERSION_PATCH 51)
 
 # init CellFrame SDK
 add_definitions("-DDAP_VERSION=\"${CPACK_PACKAGE_VERSION_MAJOR}-${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}\"")
diff --git a/cellframe-sdk b/cellframe-sdk
index 8ecc9ea0306a36d619a986d384e58a7f075c2f3d..9677a59b4e5adf4001ec146f4c92c31a23bf873e 160000
--- a/cellframe-sdk
+++ b/cellframe-sdk
@@ -1 +1 @@
-Subproject commit 8ecc9ea0306a36d619a986d384e58a7f075c2f3d
+Subproject commit 9677a59b4e5adf4001ec146f4c92c31a23bf873e
diff --git a/prod_build b/prod_build
index 49be1d56fddb4d50488c5df86355d73cb7e3814d..f6f8d1e4bf8ab62037f6eb5a17f807eef11a2f05 160000
--- a/prod_build
+++ b/prod_build
@@ -1 +1 @@
-Subproject commit 49be1d56fddb4d50488c5df86355d73cb7e3814d
+Subproject commit f6f8d1e4bf8ab62037f6eb5a17f807eef11a2f05