diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 92ebcf1..9d3f4dc 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,8 +10,8 @@ on:
         default: 'luci-app-jellyfin luci-app-kodexplorer'
 
 env:
-  SDK_NAME: openwrt-sdk-19.07.8-realtek-rtd129x_gcc-7.5.0_musl.Linux-x86_64
-  SDK_URL: https://fw.koolcenter.com/binary/ars2/
+  SDK_NAME: openwrt-sdk-21.02.0-mvebu-cortexa53_gcc-8.4.0_musl.Linux-x86_64
+  SDK_URL: https://downloads.openwrt.org/releases/21.02.0/targets/mvebu/cortexa53/
   TZ: Asia/Shanghai
 
 jobs: