diff --git a/.copier-answers.yml b/.copier-answers.yml
index fe54bcb83b761127225d1fba161c1f8da07e3007..ecdcde468fe0ded6e0661a2047c45c869cba1a90 100644
--- a/.copier-answers.yml
+++ b/.copier-answers.yml
@@ -1,5 +1,5 @@
 # Changes here will be overwritten by Copier
-_commit: v0.1.6
+_commit: v0.2.0
 _src_path: https://gitlab.softwareheritage.org/swh/devel/swh-py-template.git
 description: Software Heritage core utilities
 distribution_name: swh-core
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2fee4738e709a7cf6e8c99cc2c7b10271cbc71b4..0d2cb4086d3f878fbadc9def96057d0dd40a67a6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -42,4 +42,13 @@ repos:
         pass_filenames: false
         language: system
         types: [python]
-
+      - id: twine-check
+        name: twine check
+        description: call twine check when pushing an annotated release tag
+        entry: bash -c "ref=$(git describe) &&
+          [[ $ref =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]] &&
+          (python3 -m build --sdist && twine check $(ls -t dist/* | head -1)) || true"
+        pass_filenames: false
+        stages: [pre-push]
+        language: python
+        additional_dependencies: [twine, build]
diff --git a/pytest.ini b/pytest.ini
index 46a89cafbc5b1003151f996b145f99cb3f7b6b21..28882a78220a28f8ba8e48ad673f7f67d88b1aec 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,6 +1,6 @@
 [pytest]
 norecursedirs = build docs .*
 asyncio_mode = strict
+consider_namespace_packages = true
 filterwarnings =
   ignore:.*uses the 'db_with_data' fixture
-consider_namespace_packages = true
diff --git a/tox.ini b/tox.ini
index 6d4b6cdbaa7619842523eb945546a5c3da291edb..84aea17eefa912c55dcf86db08101ecb86de2581 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,6 +7,7 @@ envlist =
   py3-{core,db,server,github}
 
 [testenv]
+usedevelop = true
 passenv = PYTHONASYNCIODEBUG
 extras =
   testing-core
@@ -17,17 +18,13 @@ deps =
   cover: pytest-cov
 commands =
   pytest --doctest-modules \
-  --rootdir {envsitepackagesdir} \
-  slow: --hypothesis-profile=slow \
-  cover: --cov={envsitepackagesdir}/swh/core --cov-branch \
-  core: {envsitepackagesdir}/swh/core/tests \
-  db: {envsitepackagesdir}/swh/core/db/tests \
-  server: {envsitepackagesdir}/swh/core/api/tests \
-  github: {envsitepackagesdir}/swh/core/github/tests \
-    {posargs}
-# --rootdir (with --import-mode from pytest.ini) are required to make tests
-# that depends on the test file to be a proper submodule of the swh namespace
-# after migration to PEP420 (implicit namespace).
+  slow:  --hypothesis-profile=slow \
+  cover: --cov=swh/core --cov-branch \
+  core:  swh/core/tests \
+  db:    swh/core/db/tests \
+  server: swh/core/api/tests \
+  github: swh/core/github/tests \
+         {posargs}
 
 [testenv:py3{,7,8,9,10,11,12,13},pypy3{,7,8,9,10,11,12,13}]
 skip_install = true