diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 7fb36fc..aa2f17f 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -16,13 +16,14 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - {os: macos-latest,   r: 'release'}
-          - {os: macos-15,       r: 'next'}
-          - {os: windows-latest, r: 'release'}
-          - {os: windows-latest, r: 'devel'}
-          - {os: ubuntu-latest,   r: 'devel', http-user-agent: 'release'}
-          - {os: ubuntu-latest,   r: 'release'}
-          - {os: ubuntu-latest,   r: 'oldrel-1'}
+          - { os: macos-latest,     r: 'release'  }
+          - { os: macos-15,         r: 'next'     }
+          - { os: windows-latest,   r: 'release'  }
+          - { os: windows-latest,   r: 'devel'    }
+          - { os: ubuntu-latest,    r: 'devel', http-user-agent: 'release' }
+          - { os: ubuntu-latest,    r: 'release'  }
+          - { os: ubuntu-latest,    r: 'oldrel-1' }
+          - { os: ubuntu-24.04-arm, r: 'release'  }
 
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}