diff --git a/.github/workflows/testing.yaml b/.github/workflows/testing.yaml
index 68fde0f..08159dc 100644
--- a/.github/workflows/testing.yaml
+++ b/.github/workflows/testing.yaml
@@ -29,8 +29,16 @@ jobs:
           - 'release'
         arch:
           - x64
+          - arm64
         experimental:
           - false
+        exclude:
+          - os: macOS-latest
+            arch: x64
+          - os: ubuntu-latest
+            arch: arm64
+          - os: windows-latest
+            arch: arm64
       fail-fast: false
     steps:
     - name: Checkout code
@@ -45,7 +53,6 @@ jobs:
       uses: r-lib/actions/setup-r@v2
       with:
         r-version: ${{ matrix.R-version }}
-        arch: ${{ matrix.arch }}
     - name: Install ape, vegan and rdiversity
       if: matrix.os == 'macOS-latest'
       run: |