diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
index 77f58f1..1fb70bc 100644
--- a/.github/workflows/build_wheels.yml
+++ b/.github/workflows/build_wheels.yml
@@ -21,24 +21,19 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-15-intel]
         arch: [native]
-        python: ["{cp310,pp310,pp311}"]
+        python: ["{cp310,pp311}"]
         # Split aarch64 across jobs because it uses emulation (slow)
         include:
-          - os: ubuntu-latest
+          # DNS fails inside i686 containers on ubuntu-26.04 runners
+          - os: ubuntu-24.04
             arch: i686
-            python: "{cp310,pp310,pp311}"
+            python: "{cp310,pp311}"
           - os: ubuntu-latest
             arch: aarch64
             python: "cp310"
           - os: ubuntu-latest
             arch: aarch64
-            python: "pp310"
-          - os: ubuntu-latest
-            arch: aarch64
-            python: "pp3{10,11}"
-          - os: ubuntu-latest
-            arch: aarch64
-            python: "pp3{10,11}"
+            python: "pp311"
     steps:
       - uses: actions/checkout@v7
         with:
@@ -49,7 +44,7 @@ jobs:
         with:
           platforms: all
         if: runner.os == 'Linux' && matrix.arch == 'aarch64'
-      - uses: pypa/cibuildwheel@v4.2.1
+      - uses: pypa/cibuildwheel@v4.3.1
         env:
           CIBW_ARCHS: "${{ matrix.arch }}"
           CIBW_BUILD: "${{ matrix.python }}-*"
diff --git a/pyproject.toml b/pyproject.toml
index dec3b6b..29b1141 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,16 +34,10 @@ Homepage = "https://python-rtmixer.readthedocs.io"
 "Source Code" = "https://github.com/spatialaudio/python-rtmixer"
 
 [tool.cibuildwheel]
-enable = ["pypy", "pypy-eol"]
-manylinux-aarch64-image = "manylinux2014"
-manylinux-pypy_x86_64-image = "manylinux2014"
-manylinux-pypy_aarch64-image = "manylinux2014"
-manylinux-x86_64-image = "manylinux2014"
+enable = ["pypy"]
 test-command = "python -c \"import rtmixer; print(rtmixer.__version__)\""
 # No portaudio on these platforms:
 test-skip = "*_i686 *-musllinux_* *_aarch64"
-# To enable testing we'd have to bump up to the Almalinux 8-based image:
-# manylinux-aarch64-image = "manylinux_2_28"
 repair-wheel-command = "bash ./tools/cibw_repair_wheel_command.sh {dest_dir} {wheel} {delocate_archs}"
 
 [tool.cibuildwheel.linux]
diff --git a/rtmixer_build.py b/rtmixer_build.py
index ef647e4..387c674 100644
--- a/rtmixer_build.py
+++ b/rtmixer_build.py
@@ -20,6 +20,11 @@
 extra_compile_args = list()
 if sys.platform == "linux":
     extra_compile_args.append("--std=c99")
+extra_kwargs = dict()
+# cffi sets py_limited_api=True by default, which setuptools >= 84.1 no longer
+# ignores for PyPy on Windows (giving an untagged, unimportable "_rtmixer.pyd")
+if sys.implementation.name != 'cpython':
+    extra_kwargs['py_limited_api'] = False
 ffibuilder.set_source(
     '_rtmixer',
     RINGBUFFER_CDEF + open('src/rtmixer.c').read(),
@@ -30,6 +35,7 @@
     undef_macros=[
         # 'NDEBUG'
     ],
+    **extra_kwargs,
 )
 
 if __name__ == '__main__':