diff --git a/BoardConfig.mk b/BoardConfig.mk
index d083a4e..d77c0d2 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -81,8 +81,8 @@ TARGET_NO_BOOTLOADER := true
 TARGET_BOOTLOADER_BOARD_NAME := mt6739
 
 # system informations
-PLATFORM_SECURITY_PATCH := 2019-03-01
-VENDOR_SECURITY_PATCH := 2019-03-01
+PLATFORM_SECURITY_PATCH := 2019-01-01
+VENDOR_SECURITY_PATCH := 2019-01-01
 PLATFORM_VERSION := 8.1.0
 
 # App