diff --git a/.github/workflows/release-build.yml b/.github/workflows/release-build.yml
index 2d3a850..96707c0 100644
--- a/.github/workflows/release-build.yml
+++ b/.github/workflows/release-build.yml
@@ -49,7 +49,7 @@ jobs:
       - name: Build
         uses: sbwml/openwrt-gh-action-sdk@master
         env:
-          ARCH: ${{ matrix.arch }}-master
+          ARCH: ${{ matrix.arch }}-openwrt-21.02
           FEEDNAME: packages_ci
           PACKAGES: luci-app-alist
           NO_REFRESH_CHECK: true