diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 805148b..1674f39 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -5,20 +5,18 @@ on:
     tags:
       - 'v*.*.*'
     branches:
-      - master
+      - k230
 
   pull_request:
     branches:
-      - master
+      - k230
 
 jobs:
   build:
     runs-on: ${{ matrix.map.os }}
     strategy:
       matrix:
-        map: [{os: windows-2019, host: windows, suffix: exe},
-              {os: ubuntu-20.04, host: linux, suffix: run},
-              {os: macos-11, host: mac, suffix: dmg},
+        map: [{os: ubuntu-20.04, host: linux, suffix: run},
               {os: ubuntu-20.04, host: linux-rpi, suffix: tar.gz}]
       fail-fast: false
     steps: