diff --git a/.github/workflows/cache_data.yaml b/.github/workflows/cache_data.yaml
index 2be12b0fa7a..584fe30daf4 100644
--- a/.github/workflows/cache_data.yaml
+++ b/.github/workflows/cache_data.yaml
@@ -20,7 +20,7 @@ on:
 jobs:
   gmt_cache:
     name: Cache GMT artifacts
-    runs-on: macOS-latest
+    runs-on: macos-latest
     defaults:
       run:
         shell: bash -l {0}
diff --git a/.github/workflows/ci_docs.yml b/.github/workflows/ci_docs.yml
index 17aa8fa2d5d..3a926ae7970 100644
--- a/.github/workflows/ci_docs.yml
+++ b/.github/workflows/ci_docs.yml
@@ -36,13 +36,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macOS-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         # Is it a draft Pull Request (true or false)?
         isDraft:
           - ${{ github.event.pull_request.draft }}
         # Only run one job (Ubuntu + Python 3.11) for draft PRs
         exclude:
-          - os: macOS-latest
+          - os: macos-latest
             isDraft: true
           - os: windows-latest
             isDraft: true
diff --git a/.github/workflows/ci_doctests.yaml b/.github/workflows/ci_doctests.yaml
index de5158f16c7..94d1123f766 100644
--- a/.github/workflows/ci_doctests.yaml
+++ b/.github/workflows/ci_doctests.yaml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macOS-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     timeout-minutes: 30
     defaults:
       run:
diff --git a/.github/workflows/ci_tests.yaml b/.github/workflows/ci_tests.yaml
index 81e41106845..f285dc55f55 100644
--- a/.github/workflows/ci_tests.yaml
+++ b/.github/workflows/ci_tests.yaml
@@ -49,13 +49,13 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.9', '3.11']
-        os: [ubuntu-latest, macOS-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         # Is it a draft Pull Request (true or false)?
         isDraft:
           - ${{ github.event.pull_request.draft }}
         # Only run two jobs (Ubuntu + Python 3.9/3.11) for draft PRs
         exclude:
-          - os: macOS-latest
+          - os: macos-latest
             isDraft: true
           - os: windows-latest
             isDraft: true
diff --git a/.github/workflows/ci_tests_dev.yaml b/.github/workflows/ci_tests_dev.yaml
index 5759ad5593f..23e9d41810a 100644
--- a/.github/workflows/ci_tests_dev.yaml
+++ b/.github/workflows/ci_tests_dev.yaml
@@ -38,7 +38,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, macOS-12, windows-2022]
+        os: [ubuntu-22.04, macos-13, windows-2022]
         gmt_git_ref: [master]
     timeout-minutes: 30
     defaults:
diff --git a/.github/workflows/ci_tests_legacy.yaml b/.github/workflows/ci_tests_legacy.yaml
index f6da3fd66fc..dbf26daad37 100644
--- a/.github/workflows/ci_tests_legacy.yaml
+++ b/.github/workflows/ci_tests_legacy.yaml
@@ -31,7 +31,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macOS-11, windows-2019]
+        os: [ubuntu-20.04, macos-11, windows-2019]
         gmt_version: ['6.3']
     timeout-minutes: 30
     defaults: