diff --git a/.github/workflows/ci_tests.yaml b/.github/workflows/ci_tests.yaml
index bcdd3d14304..a1d58485c20 100644
--- a/.github/workflows/ci_tests.yaml
+++ b/.github/workflows/ci_tests.yaml
@@ -24,7 +24,7 @@ name: Tests
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, ci/macos ]
     paths:
       - 'pygmt/**'
       - '.github/workflows/ci_tests.yaml'
@@ -55,7 +55,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.10', '3.12']
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [macos-latest]
         # Is it a draft Pull Request (true or false)?
         isDraft:
           - ${{ github.event.pull_request.draft }}
@@ -89,7 +89,7 @@ jobs:
             xarray-version: ''
             optional-packages: ' geopandas<1'
 
-    timeout-minutes: 30
+    timeout-minutes: 4
     defaults:
       run:
         shell: bash -l {0}