diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4c54e5f8..72dc0ef2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -39,7 +39,7 @@ jobs:
           )
           echo "include=$MATRIX" | tee -a $GITHUB_OUTPUT
         env:
-          CIBW_ARCHS_LINUX: x86_64
+          CIBW_ARCHS_LINUX: x86_64 aarch64
           CIBW_ARCHS_MACOS: x86_64 arm64
           CIBW_ARCHS_WINDOWS: AMD64
 
@@ -53,6 +53,10 @@ jobs:
         include: ${{ fromJson(needs.generate_wheels_matrix.outputs.include) }}
 
     steps:
+      - uses: docker/setup-qemu-action@v2
+        if: runner.os == 'Linux'
+        with:
+          platforms: arm64
       - uses: actions/checkout@v4
       - name: Checkout mypy
         shell: bash
diff --git a/cibuildwheel.toml b/cibuildwheel.toml
index 0b01bfdd..978688e0 100644
--- a/cibuildwheel.toml
+++ b/cibuildwheel.toml
@@ -89,3 +89,17 @@ before-test = [
   "pip install -r {project}/mypy/test-requirements.txt",
 ]
 environment = { MYPYC_OPT_LEVEL="3", MYPYC_DEBUG_LEVEL="0", CC="clang" }
+
+[[tool.cibuildwheel.overrides]]
+select = "*linux_aarch64"
+# Only run testcheck, since the other tests are slow and can be flaky (because of TimeoutError).
+test-command = """ \
+  ( \
+     DIR=$(python -c 'import mypy, os; dn = os.path.dirname; print(dn(dn(mypy.__path__[0])))') \
+     && cp '{project}/mypy/pyproject.toml' '{project}/mypy/conftest.py' $DIR \
+\
+     && MYPY_TEST_DIR=$(python -c 'import mypy.test; print(mypy.test.__path__[0])') \
+\
+     && MYPY_TEST_PREFIX='{project}/mypy' pytest $MYPY_TEST_DIR/testcheck.py \
+   )
+"""