diff --git a/build/envsetup_milkv.sh b/build/envsetup_milkv.sh
index 1a0ea2979..bdad9df62 100644
--- a/build/envsetup_milkv.sh
+++ b/build/envsetup_milkv.sh
@@ -853,7 +853,7 @@ function cvi_setup_env()
   export SYSTEM_OUT_DIR
   export CROSS_COMPILE_PATH
   # buildroot config
-  export BR_DIR="$TOP_DIR"/buildroot-2021.05
+  export BR_DIR="$TOP_DIR"/buildroot-2024.02
   export BR_BOARD=cvitek_${CHIP_ARCH}_${SDK_VER}
   export BR_OVERLAY_DIR=${BR_DIR}/board/cvitek/${CHIP_ARCH}/overlay
   export BR_DEFCONFIG=${BR_BOARD}_defconfig