diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 46eac8a..9526ae5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,6 +35,7 @@ jobs:
           - ubuntu-24.04
           - ubuntu-22.04
           - ubuntu-20.04
+          - macos-15
           - macos-14
           - macos-13
           - macos-12
diff --git a/README.md b/README.md
index 06086e4..373faf4 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ Whether to cache the OpenFOAM installation between runs. Default: `true`.
 
 - **`ubuntu-20.04`**: 2406, 2312, 2306, 2212, 2206, 2112, 2106, 2012, 2006 (openfoam.com), 12, 11, 10, 9, 8, 7 (openfoam.org)
 
-- **`macos-14`**, **`macos-13`**, **`macos-12`**: 2406, 2312, 2306, 2212, 2206, 2112 (via [OpenFOAM.app](https://github.com/gerlero/openfoam-app))
+- **`macos-15`**, **`macos-14`**, **`macos-13`**, **`macos-12`**: 2406, 2312, 2306, 2212, 2206, 2112 (via [OpenFOAM.app](https://github.com/gerlero/openfoam-app))
 
 - [Docker `container`](https://docs.github.com/en/actions/writing-workflows/choosing-where-your-workflow-runs/running-jobs-in-a-container) based on: