diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 881ffa6..38cb0de 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,10 +7,14 @@ on:
   pull_request:
   schedule:
     - cron: '0 12 * * 0'  # run once a week on Sunday
+  # Allow to run this workflow manually from the Actions tab
+  workflow_dispatch:
 
 jobs:
   build:
     strategy:
+      # We want to see all failures:
+      fail-fast: false
       matrix:
         config:
         # [Python version, tox env]
diff --git a/.meta.toml b/.meta.toml
index b87303f..95ce2b3 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 = "5ff06aa9d4d474924437add182099207b5b7f5f7"
+commit-id = "d4e8550e4a37df10866d376fceac4e91689df8c5"
 
 [python]
 with-appveyor = false
@@ -16,3 +16,9 @@ use-flake8 = true
 
 [coverage]
 fail-under = 99.5
+
+[manifest]
+additional-rules = [
+    "recursive-include docs *.bat",
+    "recursive-include src *.zcml",
+    ]
diff --git a/MANIFEST.in b/MANIFEST.in
index 0676639..9d056b3 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -5,14 +5,11 @@ include *.txt
 include buildout.cfg
 include tox.ini
 
-recursive-include docs *.bat
 recursive-include docs *.py
 recursive-include docs *.rst
 recursive-include docs *.txt
 recursive-include docs Makefile
 
-recursive-include src *.pt
 recursive-include src *.py
-recursive-include src *.rst
-recursive-include src *.txt
+recursive-include docs *.bat
 recursive-include src *.zcml
diff --git a/tox.ini b/tox.ini
index 3dce561..57c5986 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,6 +19,8 @@ envlist =
 usedevelop = true
 deps =
     zope.testrunner
+    # Until repoze.sphinx.autointerface supports Sphinx 4.x we cannot use it:
+    Sphinx < 4
 commands =
     zope-testrunner --test-path=src {posargs:-vc}
     sphinx-build -b doctest -d {envdir}/.cache/doctrees docs {envdir}/.cache/doctest
@@ -41,7 +43,8 @@ commands =
 [testenv:docs]
 basepython = python3
 skip_install = false
-deps =
+# Until repoze.sphinx.autointerface supports Sphinx 4.x we cannot use it:
+deps = Sphinx < 4
 commands_pre =
 commands =
     sphinx-build -b html -d docs/_build/doctrees docs docs/_build/html
@@ -54,6 +57,8 @@ allowlist_externals =
 deps =
     coverage
     coverage-python-version
+    # Until repoze.sphinx.autointerface supports Sphinx 4.x we cannot use it:
+    Sphinx < 4
     zope.testrunner
 commands =
     mkdir -p {toxinidir}/parts/htmlcov