diff --git a/script/download_toolchain.sh b/script/download_toolchain.sh
index fa6f93b0..d5398af9 100755
--- a/script/download_toolchain.sh
+++ b/script/download_toolchain.sh
@@ -1,7 +1,7 @@
 #! /bin/bash
 
 ROOT_PATH=$PWD
-GCC_LINK=https://github.com/T-head-Semi/csi-nn2/releases/download/v1.12/Xuantie-900-gcc-linux-5.10.4-glibc-x86_64-V2.2.5-20220323.tar.gz
+GCC_LINK=https://github.com/T-head-Semi/csi-nn2/releases/download/v1.12.1/Xuantie-900-gcc-linux-5.10.4-glibc-x86_64-V2.4.0-20220428.tar.gz
 TAR_FILE=$ROOT_PATH/tools/Xuantie-900-gcc-linux-toolchain.tar.gz
 
 # create dir