diff --git a/platform/broadcom/sai.mk b/platform/broadcom/sai.mk
index 86199b88b6..8690bdddce 100644
--- a/platform/broadcom/sai.mk
+++ b/platform/broadcom/sai.mk
@@ -1,8 +1,8 @@
-BRCM_SAI = libsaibcm_4.2.1.5-7_amd64.deb
-$(BRCM_SAI)_URL = "https://sonicstorage.blob.core.windows.net/packages/bcmsai/4.2/master/buster/libsaibcm_4.2.1.5-7_amd64.deb?sv=2015-04-05&sr=b&sig=ldUfPMl4Lb0KhXtVtwzFZFYU5qrhxFzT90NX3KSnku0%3D&se=2034-08-27T01%3A34%3A16Z&sp=r"
-BRCM_SAI_DEV = libsaibcm-dev_4.2.1.5-7_amd64.deb
+BRCM_SAI = libsaibcm_4.2.1.5-8_amd64.deb
+$(BRCM_SAI)_URL = "https://sonicstorage.blob.core.windows.net/packages/bcmsai/4.2/master/buster/libsaibcm_4.2.1.5-8_amd64.deb?sv=2019-12-12&st=2020-12-18T18%3A41%3A23Z&se=2030-12-19T18%3A41%3A00Z&sr=b&sp=r&sig=GFNMn0borytUTFQJf%2F5A0J452XsQ%2FqnzBw5GyjFuYHw%3D"
+BRCM_SAI_DEV = libsaibcm-dev_4.2.1.5-8_amd64.deb
 $(eval $(call add_derived_package,$(BRCM_SAI),$(BRCM_SAI_DEV)))
-$(BRCM_SAI_DEV)_URL = "https://sonicstorage.blob.core.windows.net/packages/bcmsai/4.2/master/buster/libsaibcm-dev_4.2.1.5-7_amd64.deb?sv=2015-04-05&sr=b&sig=TboOe3jFGgl2j7%2FAFiJNQ%2F%2Fa4JaVGijgAH2MSMVPYOI%3D&se=2034-08-27T01%3A32%3A58Z&sp=r"
+$(BRCM_SAI_DEV)_URL = "https://sonicstorage.blob.core.windows.net/packages/bcmsai/4.2/master/buster/libsaibcm-dev_4.2.1.5-8_amd64.deb?sv=2019-12-12&st=2020-12-18T18%3A42%3A03Z&se=2030-12-19T18%3A42%3A00Z&sr=b&sp=r&sig=J%2BbRtZVVcZTLs3uqzZs9zObLKFxRgzvJkFL5iyJ48mA%3D"
 
 SONIC_ONLINE_DEBS += $(BRCM_SAI)
 $(BRCM_SAI_DEV)_DEPENDS += $(BRCM_SAI)
diff --git a/platform/mellanox/fw.mk b/platform/mellanox/fw.mk
index 4eccd9e882..0740fba99d 100644
--- a/platform/mellanox/fw.mk
+++ b/platform/mellanox/fw.mk
@@ -11,17 +11,17 @@ else
 FW_FROM_URL = n
 endif
 
-MLNX_SPC_FW_VERSION = 13.2008.1956
+MLNX_SPC_FW_VERSION = 13.2008.2112
 MLNX_SPC_FW_FILE = fw-SPC-rel-$(subst .,_,$(MLNX_SPC_FW_VERSION))-EVB.mfa
 $(MLNX_SPC_FW_FILE)_PATH = $(MLNX_FW_BASE_PATH)
 $(MLNX_SPC_FW_FILE)_URL = $(MLNX_FW_BASE_URL)/$(MLNX_SPC_FW_FILE)
 
-MLNX_SPC2_FW_VERSION = 29.2008.1956
+MLNX_SPC2_FW_VERSION = 29.2008.2112
 MLNX_SPC2_FW_FILE = fw-SPC2-rel-$(subst .,_,$(MLNX_SPC2_FW_VERSION))-EVB.mfa
 $(MLNX_SPC2_FW_FILE)_PATH = $(MLNX_FW_BASE_PATH)
 $(MLNX_SPC2_FW_FILE)_URL = $(MLNX_FW_BASE_URL)/$(MLNX_SPC2_FW_FILE)
 
-MLNX_SPC3_FW_VERSION = 30.2008.1956
+MLNX_SPC3_FW_VERSION = 30.2008.2112
 MLNX_SPC3_FW_FILE = fw-SPC3-rel-$(subst .,_,$(MLNX_SPC3_FW_VERSION))-EVB.mfa
 $(MLNX_SPC3_FW_FILE)_PATH = $(MLNX_FW_BASE_PATH)
 $(MLNX_SPC3_FW_FILE)_URL = $(MLNX_FW_BASE_URL)/$(MLNX_SPC3_FW_FILE)
diff --git a/platform/mellanox/mlnx-sai.mk b/platform/mellanox/mlnx-sai.mk
index 38ea6a6358..0c1795cf41 100644
--- a/platform/mellanox/mlnx-sai.mk
+++ b/platform/mellanox/mlnx-sai.mk
@@ -1,6 +1,6 @@
 # Mellanox SAI
 
-MLNX_SAI_VERSION = SAIRel1.17.6-master
+MLNX_SAI_VERSION = SAIRel1.18.0.2-master
 
 export MLNX_SAI_VERSION
 
diff --git a/platform/mellanox/mlnx-sai/SAI-Implementation b/platform/mellanox/mlnx-sai/SAI-Implementation
index caf2b109e5..ad1e9c7279 160000
--- a/platform/mellanox/mlnx-sai/SAI-Implementation
+++ b/platform/mellanox/mlnx-sai/SAI-Implementation
@@ -1 +1 @@
-Subproject commit caf2b109e52fff932e07f49d23f02f4b052e2113
+Subproject commit ad1e9c7279e544b93fef9a40fb41df375338b55e
diff --git a/platform/mellanox/sdk-src/sx-kernel/Switch-SDK-drivers b/platform/mellanox/sdk-src/sx-kernel/Switch-SDK-drivers
index bea351d3e8..3b1dc10d69 160000
--- a/platform/mellanox/sdk-src/sx-kernel/Switch-SDK-drivers
+++ b/platform/mellanox/sdk-src/sx-kernel/Switch-SDK-drivers
@@ -1 +1 @@
-Subproject commit bea351d3e86b36545508df061cb8425f40c77c5a
+Subproject commit 3b1dc10d694b063a0c8c3d311dd720bbb25a218a
diff --git a/platform/mellanox/sdk.mk b/platform/mellanox/sdk.mk
index 22d7657b4b..4b2c533bf9 100644
--- a/platform/mellanox/sdk.mk
+++ b/platform/mellanox/sdk.mk
@@ -1,6 +1,6 @@
 MLNX_SDK_BASE_PATH = $(PLATFORM_PATH)/sdk-src/sx-kernel/Switch-SDK-drivers/bin/
 MLNX_SDK_PKG_BASE_PATH = $(MLNX_SDK_BASE_PATH)/$(BLDENV)/
-MLNX_SDK_VERSION = 4.4.1956
+MLNX_SDK_VERSION = 4.4.2112
 MLNX_SDK_ISSU_VERSION = 101
 
 MLNX_SDK_DEB_VERSION = $(subst -,.,$(subst _,.,$(MLNX_SDK_VERSION)))
diff --git a/src/sonic-sairedis b/src/sonic-sairedis
index 83d11f1da7..754849a476 160000
--- a/src/sonic-sairedis
+++ b/src/sonic-sairedis
@@ -1 +1 @@
-Subproject commit 83d11f1da760a90cb3f6303fb299a056b9af4e24
+Subproject commit 754849a476ab64feb163baa23190078a5b1b0586