diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 14244e4..d55ec84 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -29,12 +29,10 @@ jobs:
         - ["3.10",  "py310"]
         - ["3.11.0-rc.2",  "py311"]
         - ["3.9",   "docs"]
-        - ["3.9",   "coverage"]
         - ["3.9",   "py39-datetime"]
         exclude:
           - { os: windows, config: ["3.9",   "lint"] }
           - { os: windows, config: ["3.9",   "docs"] }
-          - { os: windows, config: ["3.9",   "coverage"] }
 
     runs-on: ${{ matrix.os }}-latest
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
@@ -59,10 +57,49 @@ jobs:
         pip install tox
     - name: Test
       run: tox -e ${{ matrix.config[1] }}
-    - name: Coverage
-      if: matrix.config[1] == 'coverage'
-      run: |
-        pip install coveralls
-        coveralls --service=github
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Upload coverage artifact
+      uses: actions/upload-artifact@v2
+      if: matrix.os != 'windows'
+      with:
+        name: coverage-data
+        path: .coverage.${{ matrix.config[1] }}
+        if-no-files-found: ignore
+
+  coverage:
+    name: Combined coverage
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        with:
+          # Use latest, so it understands all syntax.
+          python-version: "3.10"
+      - run: python -m pip install --upgrade coveralls coverage[toml]
+
+      - name: Download coverage data.
+        uses: actions/download-artifact@v2
+        with:
+          name: coverage-data
+
+      - name: Indicate completion to coveralls.io
+        run: |
+          python -m coverage combine
+          coveralls --service=github
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Coverage report and fail if it's <100%.
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          python -m coverage html --skip-covered --skip-empty
+          python -m coverage report --fail-under=100
+
+      - name: Upload HTML report if check failed.
+        uses: actions/upload-artifact@v2
+        with:
+          name: html-report
+          path: htmlcov
+        if: ${{ failure() }}
diff --git a/.meta.toml b/.meta.toml
index bb6c073..5f54a5a 100644
--- a/.meta.toml
+++ b/.meta.toml
@@ -2,7 +2,7 @@
 # https://github.com/zopefoundation/meta/tree/master/config/pure-python
 [meta]
 template = "pure-python"
-commit-id = "b5df3766ff8923477f3d24729b19504f0c401a2e"
+commit-id = "54e37f7de7149c0d4003e40bbe300d012a851ce7"
 
 [python]
 with-pypy = false
@@ -16,7 +16,6 @@ with-future-python = true
 use-flake8 = true
 additional-envlist = [
     "py39-datetime",
-    "combined-coverage",
     ]
 testenv-deps = [
     "datetime: DateTime",
@@ -31,33 +30,18 @@ testenv-commands = [
     "pip list",
     "pytest --cov=src --cov=tests --cov-report= {posargs}",
     ]
-testenv-additional = [
-    "",
-    "[testenv:combined-coverage]",
-    "basepython = python3",
-    "allowlist_externals =",
-    "    mkdir",
-    "deps =",
-    "    coverage",
-    "    -cconstraints.txt",
-    "setenv =",
-    "    COVERAGE_FILE=.coverage",
-    "commands =",
-    "    mkdir -p {toxinidir}/parts/htmlcov",
-    "    coverage erase",
-    "    coverage combine",
-    "    coverage html",
-    "    coverage report -m --fail-under=100",
-    "depends = py36,py37,py38,py39,py39-datetime,py310,py311,coverage",
-    ]
-coverage-basepython = "python3.8"
-coverage-command = "pytest --cov=src --cov=tests --cov-report= {posargs}"
+coverage-basepython = "python3"
+coverage-command = [
+    "coverage erase",
+    "coverage combine"
+]
+coverage-depends = "py36,py37,py38,py39,py39-datetime,py310,py311"
 coverage-setenv = [
     "COVERAGE_FILE=.coverage",
     ]
 
 [coverage]
-fail-under = 98.8
+fail-under = 100.0
 
 [isort]
 additional-sources = "{toxinidir}/tests"
diff --git a/tox.ini b/tox.ini
index 3226a98..ec3a21e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,9 +11,8 @@ envlist =
     py310
     py311
     docs
-    coverage
     py39-datetime
-    combined-coverage
+    coverage
 
 [testenv]
 usedevelop = true
@@ -34,23 +33,6 @@ extras =
     test
     docs
 
-[testenv:combined-coverage]
-basepython = python3
-allowlist_externals =
-    mkdir
-deps =
-    coverage
-    -cconstraints.txt
-setenv =
-    COVERAGE_FILE=.coverage
-commands =
-    mkdir -p {toxinidir}/parts/htmlcov
-    coverage erase
-    coverage combine
-    coverage html
-    coverage report -m --fail-under=100
-depends = py36,py37,py38,py39,py39-datetime,py310,py311,coverage
-
 [testenv:lint]
 basepython = python3
 skip_install = true
@@ -83,7 +65,7 @@ commands =
     sphinx-build -b doctest -d docs/_build/doctrees docs docs/_build/doctest
 
 [testenv:coverage]
-basepython = python3.8
+basepython = python3
 allowlist_externals =
     mkdir
 deps =
@@ -96,10 +78,11 @@ setenv =
     COVERAGE_FILE=.coverage
 commands =
     mkdir -p {toxinidir}/parts/htmlcov
-    pytest --cov=src --cov=tests --cov-report= {posargs}
+    coverage erase
+    coverage combine
     coverage run -a -m sphinx -b doctest -d {envdir}/.cache/doctrees docs {envdir}/.cache/doctest
     coverage html
-    coverage report -m --fail-under=98.8
+    coverage report -m --fail-under=100.0
 
 [coverage:run]
 branch = True