diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index cf5acfa..8e82817 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -7,7 +7,15 @@ env:
 jobs:
   cargo-tests:
     runs-on: ubuntu-latest
+    name: tests (${{ matrix.spec.arch }})
     timeout-minutes: 20
+    strategy:
+      matrix:
+        spec:
+          - arch: aarch64
+            target: aarch64-unknown-linux-gnu
+          - arch: x86
+            target: x86_64-unknown-linux-gnu
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4
@@ -17,12 +25,32 @@ jobs:
         with:
           cache-on-failure: true
       - name: Install xsltproc
+        shell: bash
         run: sudo apt-get install xsltproc
+      - uses: taiki-e/setup-cross-toolchain-action@v1
+        with:
+          target: ${{ matrix.spec.target }}
       - uses: taiki-e/install-action@nextest
-      - name: cargo test
-        run: cargo nextest run --workspace --all --locked
+      - uses: uraimo/run-on-arch-action@v2
+        if: matrix.spec.arch == 'aarch64'
+        name: Run tests (aarch64)
+        with:
+          arch: ${{ matrix.spec.arch }}
+          distro: ubuntu_latest
+          install: |
+            apt-get install xsltproc
+            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+            source ~/.bash_profile
+            source ~/.bashrc
+          run: |
+              cargo nextest run --workspace --all --locked --target ${{ matrix.spec.target }} -F simd-keccak
+      - name: Run tests (worker native x86)
+        if: matrix.spec.arch == 'x86'
+        run: |
+          cargo nextest run --workspace --all --locked --target ${{ matrix.spec.target }}
   cargo-lint:
     runs-on: ubuntu-latest
+    name: lint
     timeout-minutes: 20
     steps:
       - name: Checkout sources
@@ -42,6 +70,7 @@ jobs:
         run: cargo +nightly clippy --workspace --all --locked -- -D warnings
   cargo-build:
     runs-on: ubuntu-latest
+    name: build
     timeout-minutes: 20
     continue-on-error: true
     steps:
@@ -59,6 +88,7 @@ jobs:
         run: cargo build --workspace --all --locked 
   cargo-doc:
     runs-on: ubuntu-latest
+    name: doc build & test
     timeout-minutes: 20
     continue-on-error: true
     steps: