diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 67583173..4f4b3a77 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -36,7 +36,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest, macos-13, macos-15]
+        os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest, windows-11-arm, macos-13, macos-15]
         python_version: ['3.13']
         include:
         - os: ubuntu-latest
@@ -70,7 +70,7 @@ jobs:
 
     - name: Generate a sample project
       run: |
-        uv run -m test.test_projects test.test_0_basic.basic_project sample_proj
+        uv run --no-sync -m test.test_projects test.test_0_basic.basic_project sample_proj
 
     - name: Run a sample build (GitHub Action)
       uses: ./
@@ -122,7 +122,7 @@ jobs:
 
     - name: Test cibuildwheel
       run: |
-        uv run bin/run_tests.py ${{ (runner.os == 'Linux' && runner.arch == 'X64') && '--run-podman' || '' }}
+        uv run --no-sync bin/run_tests.py ${{ (runner.os == 'Linux' && runner.arch == 'X64') && '--run-podman' || '' }}
 
   emulated-archs:
     name: Get qemu emulated architectures
@@ -141,7 +141,7 @@ jobs:
     - name: Get qemu emulated architectures
       id: archs
       run: |
-        OUTPUT=$(uv run python -c "from json import dumps; from test.utils import EMULATED_ARCHS; print(dumps(EMULATED_ARCHS))")
+        OUTPUT=$(uv run --no-sync python -c "from json import dumps; from test.utils import EMULATED_ARCHS; print(dumps(EMULATED_ARCHS))")
         echo "${OUTPUT}"
         echo "archs=${OUTPUT}" >> "$GITHUB_OUTPUT"
 
@@ -166,7 +166,7 @@ jobs:
       uses: docker/setup-qemu-action@v3
 
     - name: Run the emulation tests
-      run: uv run pytest --run-emulation ${{ matrix.arch }} test/test_emulation.py
+      run: uv run --no-sync pytest --run-emulation ${{ matrix.arch }} test/test_emulation.py
 
   test-pyodide:
     name: Test cibuildwheel building Pyodide wheels
@@ -186,7 +186,7 @@ jobs:
 
     - name: Generate a sample project
       run: |
-        uv run -m test.test_projects test.test_0_basic.basic_project sample_proj
+        uv run --no-sync -m test.test_projects test.test_0_basic.basic_project sample_proj
 
     - name: Run a sample build (GitHub Action)
       uses: ./
@@ -198,6 +198,6 @@ jobs:
 
     - name: Run tests with 'CIBW_PLATFORM' set to 'pyodide'
       run: |
-        uv run ./bin/run_tests.py
+        uv run --no-sync ./bin/run_tests.py
       env:
         CIBW_PLATFORM: pyodide
diff --git a/test/test_dependency_versions.py b/test/test_dependency_versions.py
index b264868f..b8d80f3b 100644
--- a/test/test_dependency_versions.py
+++ b/test/test_dependency_versions.py
@@ -1,3 +1,4 @@
+import platform
 import re
 import textwrap
 from pathlib import Path
@@ -56,6 +57,8 @@ def test_pinned_versions(tmp_path, python_version, build_frontend_env_nouv):
         pytest.skip("linux doesn't pin individual tool versions, it pins manylinux images instead")
     if python_version != "3.12" and utils.platform == "pyodide":
         pytest.skip(f"pyodide does not support Python {python_version}")
+    if python_version == "3.8" and utils.platform == "windows" and platform.machine() == "ARM64":
+        pytest.skip(f"Windows ARM64 does not support Python {python_version}")
 
     project_dir = tmp_path / "project"
     project_with_expected_version_checks.generate(project_dir)
diff --git a/test/utils.py b/test/utils.py
index d999e1b4..b3d2b172 100644
--- a/test/utils.py
+++ b/test/utils.py
@@ -245,6 +245,10 @@ def _expected_wheels(
             "cp313-cp313t",
         ]
 
+        if machine_arch == "ARM64":
+            # no CPython 3.8 on Windows ARM64
+            python_abi_tags.pop(0)
+
         if machine_arch in ["x86_64", "i686", "AMD64", "aarch64", "arm64"]:
             python_abi_tags += [
                 "pp38-pypy38_pp73",
@@ -290,7 +294,11 @@ def _expected_wheels(
                 )
 
         elif platform == "windows":
-            platform_tags = ["win_amd64"] if machine_arch == "AMD64" else ["win32"]
+            platform_tags = {
+                "AMD64": ["win_amd64"],
+                "ARM64": ["win_arm64"],
+                "x86": ["win32"],
+            }.get(machine_arch, [])
 
         elif platform == "macos":
             if python_abi_tag.startswith("pp"):
diff --git a/unit_test/oci_container_test.py b/unit_test/oci_container_test.py
index 5acc9cc4..24466023 100644
--- a/unit_test/oci_container_test.py
+++ b/unit_test/oci_container_test.py
@@ -37,6 +37,7 @@ DEFAULT_OCI_PLATFORM = {
     "s390x": OCIPlatform.S390X,
     "aarch64": OCIPlatform.ARM64,
     "arm64": OCIPlatform.ARM64,
+    "ARM64": OCIPlatform.ARM64,
 }[pm]
 
 PODMAN = OCIContainerEngineConfig(name="podman")