diff --git a/dockers/docker-fpm-frr/Dockerfile.j2 b/dockers/docker-fpm-frr/Dockerfile.j2
index d0cb32d02ec5..b0dc413c8c89 100644
--- a/dockers/docker-fpm-frr/Dockerfile.j2
+++ b/dockers/docker-fpm-frr/Dockerfile.j2
@@ -1,5 +1,5 @@
 {% from "dockers/dockerfile-macros.j2" import install_debian_packages, install_python_wheels, copy_files %}
-FROM docker-swss-layer-bullseye-{{DOCKER_USERNAME}}:{{DOCKER_USERTAG}}
+FROM docker-swss-layer-bookworm-{{DOCKER_USERNAME}}:{{DOCKER_USERTAG}}
 
 ARG docker_container_name
 ARG frr_user_uid
diff --git a/rules/docker-fpm-frr.mk b/rules/docker-fpm-frr.mk
index b866960d6d73..f3353e3a34d9 100644
--- a/rules/docker-fpm-frr.mk
+++ b/rules/docker-fpm-frr.mk
@@ -8,13 +8,13 @@ $(DOCKER_FPM_FRR)_PATH = $(DOCKERS_PATH)/$(DOCKER_FPM_FRR_STEM)
 $(DOCKER_FPM_FRR)_PYTHON_WHEELS += $(SONIC_BGPCFGD) $(SONIC_FRR_MGMT_FRAMEWORK)
 
 $(DOCKER_FPM_FRR)_DEPENDS += $(FRR) $(FRR_SNMP) $(SWSS) $(LIBYANG2) $(SONIC_RSYSLOG_PLUGIN)
-$(DOCKER_FPM_FRR)_DBG_DEPENDS = $($(DOCKER_SWSS_LAYER_BULLSEYE)_DBG_DEPENDS)
+$(DOCKER_FPM_FRR)_DBG_DEPENDS = $($(DOCKER_SWSS_LAYER_BOOKWORM)_DBG_DEPENDS)
 $(DOCKER_FPM_FRR)_DBG_DEPENDS += $(SWSS_DBG) $(LIBSWSSCOMMON_DBG) \
                                 $(FRR_DBG) $(FRR_SNMP_DBG) $(LIBYANG2_DBG) $(SONIC_RSYSLOG_PLUGIN)
 
-$(DOCKER_FPM_FRR)_DBG_IMAGE_PACKAGES = $($(DOCKER_SWSS_LAYER_BULLSEYE)_DBG_IMAGE_PACKAGES)
+$(DOCKER_FPM_FRR)_DBG_IMAGE_PACKAGES = $($(DOCKER_SWSS_LAYER_BOOKWORM)_DBG_IMAGE_PACKAGES)
 
-$(DOCKER_FPM_FRR)_LOAD_DOCKERS += $(DOCKER_SWSS_LAYER_BULLSEYE)
+$(DOCKER_FPM_FRR)_LOAD_DOCKERS += $(DOCKER_SWSS_LAYER_BOOKWORM)
 
 $(DOCKER_FPM_FRR)_VERSION = 1.0.0
 $(DOCKER_FPM_FRR)_PACKAGE_NAME = fpm-frr
@@ -42,5 +42,5 @@ $(DOCKER_FPM_FRR)_BASE_IMAGE_FILES += TSC:/usr/bin/TSC
 $(DOCKER_FPM_FRR)_BASE_IMAGE_FILES += TS:/usr/bin/TS
 $(DOCKER_FPM_FRR)_BASE_IMAGE_FILES += idf_isolation:/usr/bin/idf_isolation
 
-SONIC_BULLSEYE_DOCKERS += $(DOCKER_FPM_FRR)
-SONIC_BULLSEYE_DBG_DOCKERS += $(DOCKER_FPM_FRR_DBG)
+SONIC_BOOKWORM_DOCKERS += $(DOCKER_FPM_FRR)
+SONIC_BOOKWORM_DBG_DOCKERS += $(DOCKER_FPM_FRR_DBG)
diff --git a/rules/libyang.mk b/rules/libyang.mk
index 6f7483ee5bd6..a8e6734459ea 100644
--- a/rules/libyang.mk
+++ b/rules/libyang.mk
@@ -12,10 +12,7 @@ LIBYANG = libyang_$(LIBYANG_VERSION)_$(CONFIGURED_ARCH).deb
 $(LIBYANG)_SRC_PATH = $(SRC_PATH)/libyang
 # introduce artifical dependency between LIBYANG and FRR
 # make sure LIBYANG is compile after FRR
-# TODO: Remove once snmp build has been updated
-ifeq ($(BLDENV),bullseye)
 $(LIBYANG)_AFTER = $(FRR)
-endif
 SONIC_MAKE_DEBS += $(LIBYANG)
 
 LIBYANG_DEV = libyang-dev_$(LIBYANG_VERSION)_$(CONFIGURED_ARCH).deb
diff --git a/src/sonic-bgpcfgd/tests/test_bbr.py b/src/sonic-bgpcfgd/tests/test_bbr.py
index b11277bae7b8..b95b94493af4 100644
--- a/src/sonic-bgpcfgd/tests/test_bbr.py
+++ b/src/sonic-bgpcfgd/tests/test_bbr.py
@@ -5,9 +5,10 @@
 from copy import deepcopy
 from . import swsscommon_test
 
+import sys
+sys.modules["swsscommon"] = swsscommon_test
 
-with patch.dict("sys.modules", swsscommon=swsscommon_test):
-    from bgpcfgd.managers_bbr import BBRMgr
+from bgpcfgd.managers_bbr import BBRMgr
 
 global_constants = {
     "bgp": {
diff --git a/src/sonic-bgpcfgd/tests/test_setsrc.py b/src/sonic-bgpcfgd/tests/test_setsrc.py
index 4de72102b613..17d6ea96f2e9 100644
--- a/src/sonic-bgpcfgd/tests/test_setsrc.py
+++ b/src/sonic-bgpcfgd/tests/test_setsrc.py
@@ -7,8 +7,10 @@
 from . import swsscommon_test
 from swsscommon import swsscommon
 
-with patch.dict("sys.modules", swsscommon=swsscommon_test):
-    from bgpcfgd.managers_setsrc import ZebraSetSrc
+import sys
+sys.modules["swsscommon"] = swsscommon_test
+
+from bgpcfgd.managers_setsrc import ZebraSetSrc
 
 TEMPLATE_PATH = os.path.abspath('../../dockers/docker-fpm-frr/frr')
 
diff --git a/src/sonic-frr/Makefile b/src/sonic-frr/Makefile
index 704786daae17..c7c43ccecc0e 100644
--- a/src/sonic-frr/Makefile
+++ b/src/sonic-frr/Makefile
@@ -7,6 +7,9 @@ DERIVED_TARGET = $(FRR_PYTHONTOOLS) $(FRR_DBG) $(FRR_SNMP) $(FRR_SNMP_DBG)
 SUFFIX = $(shell date +%Y%m%d\.%H%M%S)
 STG_BRANCH = stg_temp.$(SUFFIX)
 
+# DEBEMAIL required by gpb dch
+export DEBEMAIL := sonicproject@googlegroups.com
+
 $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
 	# Build the package
 	pushd ./frr