diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c1edbfbc1..68b4c9bc0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -2,7 +2,7 @@ name: Main link-grammar CI
 
 on:
   push:
-    branches: [ master ]
+    branches: [ master, macos-ci ]
   pull_request:
     branches: [ master ]
 
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-12, macos-13, macos-14, ubuntu-latest]
+        os: [ubuntu-latest]
     name: ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     steps: