ci: fix branch name
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d0afe6b..79c8a20 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,12 +8,12 @@
   workflow_dispatch:
   push:
     branches:
-      - 'master'
+      - 'main'
     tags:
       - 'v*'
   pull_request:
     branches:
-      - 'master'
+      - 'main'
 
 jobs:
   image: