diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3b495b1a..33487d35 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -341,12 +341,17 @@ jobs:
           # might also save some build time?
           unzip -n dist/zope.interface-*whl -d src
           pip install -U -e .[test]
-      - name: Run tests and report coverage
-        # Once with C extensions, once without. Yes, this runs them
-        # twice on PyPy.
+      - name: Run tests with C extensions
+        if: ${{ !startsWith(matrix.python-version, 'pypy') }}
         run: |
           coverage run -p -m unittest discover -s src
-          PURE_PYTHON=1 coverage run -p -m unittest discover -s src
+      - name: Run tests without C extensions
+        run: |
+          coverage run -p -m unittest discover -s src
+        env:
+          PURE_PYTHON: 1
+      - name: Report Coverage
+        run: |
           coverage combine
           coverage report --ignore-errors --show-missing
       - name: Submit to Coveralls
diff --git a/.meta.toml b/.meta.toml
index 2053358d..b499be99 100644
--- a/.meta.toml
+++ b/.meta.toml
@@ -69,26 +69,17 @@ additional-install = [
     "    # might also save some build time?",
     "    unzip -n dist/zope.interface-*whl -d src",
     "    pip install -U -e .[test]",
-    "- name: Run tests and report coverage",
-    "  # Once with C extensions, once without. Yes, this runs them",
-    "  # twice on PyPy.",
+    "- name: Run tests with C extensions",
+    "  if: ${{ !startsWith(matrix.python-version, 'pypy') }}",
     "  run: |",
     "    coverage run -p -m unittest discover -s src",
-    "    PURE_PYTHON=1 coverage run -p -m unittest discover -s src",
+    "- name: Run tests without C extensions",
+    "  run: |",
+    "    coverage run -p -m unittest discover -s src",
+    "  env:",
+    "    PURE_PYTHON: 1",
+    "- name: Report Coverage",
+    "  run: |",
     "    coverage combine",
     "    coverage report --ignore-errors --show-missing",
     ]
-
-[appveyor]
-global-env-vars = [
-    "# Currently the builds use @mgedmin's Appveyor account.  The PyPI token",
-    "# belongs to zope.wheelbuilder, which is managed by @mgedmin and @dataflake.",
-    "",
-    "global:",
-    "  TWINE_USERNAME: __token__",
-    "  TWINE_PASSWORD:",
-    "    secure: aoZC/+rvJKg8B5GMGIxd1X2q2bz7SMl8G3810BID9U8PXFqM0FbWaK9fZ9qcU0UyG2xJsK56Fb6+L6g27I0Lg8UFNhlU1zLAuMSgJQbHsqawFgSY067IdJB68pp34d/oEyxMrJvAKENHH77Fe4KGDssLlk5WnnYS3DA9b66p5imP+1DTtkq5/gMtoG4nZTBtVos7J2kkYTQ5t4BjzTQxPMC3bStNnvuuB0orX4AoCyTrOR1wdZFiNKLzbVnrJCNn24t/n3kG9WrxbnKlrbOm4A==",
-    ]
-test-steps = [
-    "- python -m unittest discover -s src",
-    ]
diff --git a/CHANGES.rst b/CHANGES.rst
index 4f012326..4186a906 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -5,6 +5,7 @@
 6.4 (unreleased)
 ================
 
+- Build windows wheels on GHA.
 
 6.3 (2024-04-12)
 ================