diff --git a/.gitignore b/.gitignore
index f124186a..185099d9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,39 +1,40 @@
 *.pyc
 *.sw?
 *~
 \#*
 .\#*
 /.coverage
 /.coverage.*
 .eggs/
 resources/test/
 __pycache__
 version.txt
 swh.web.egg-info
 docs/build/
 docs/uri-scheme.md
 docs/dev-info.md
 *.sqlite3
 .vscode/
 .directory
 node_modules/
 swh/web/static/*.*
 swh/web/static/js/
 swh/web/static/css/
 swh/web/static/fonts/
 swh/web/static/jssources/
 swh/web/static/img/thirdParty/
 .cache-loader/
 build/
 dist/
 .hypothesis
 .cache
 .pytest_cache
 .tox/
+.mypy_cache/
 debian/
 package-lock.json
 yarn-error.log
 cypress/mochawesome/
 .nyc_output/
 cypress/coverage/
 cypress/fixtures/source*.json
diff --git a/MANIFEST.in b/MANIFEST.in
index 1f4d4094..aef7206e 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,15 +1,16 @@
 include Makefile
 include pytest.ini
 include README.md
 include requirements.txt
 include requirements-swh.txt
 include requirements-test.txt
 include tox.ini
 include version.txt
+recursive-include swh py.typed
 recursive-include swh/web/assets *
 recursive-include swh/web/static *
 recursive-include swh/web/templates *
 recursive-include swh/web/tests/resources *
 
 include package.json
 include yarn.lock
diff --git a/mypy.ini b/mypy.ini
new file mode 100644
index 00000000..517639ab
--- /dev/null
+++ b/mypy.ini
@@ -0,0 +1,52 @@
+[mypy]
+namespace_packages = True
+warn_unused_ignores = True
+
+
+# # support for django magic: https://github.com/typeddjango/django-stubs
+# plugins = mypy_django_plugin.main
+
+# [mypy.plugins.django-stubs]
+# django_settings_module = swh.web.settings.tests
+
+
+# 3rd party libraries without stubs (yet)
+
+[mypy-bs4.*]
+ignore_missing_imports = True
+
+[mypy-django_js_reverse.*]
+ignore_missing_imports = True
+
+[mypy-htmlmin.*]
+ignore_missing_imports = True
+
+[mypy-magic.*]
+ignore_missing_imports = True
+
+[mypy-pkg_resources.*]
+ignore_missing_imports = True
+
+[mypy-pygments.*]
+ignore_missing_imports = True
+
+[mypy-pypandoc.*]
+ignore_missing_imports = True
+
+[mypy-pytest.*]
+ignore_missing_imports = True
+
+[mypy-rest_framework.*]
+ignore_missing_imports = True
+
+[mypy-requests_mock.*]
+ignore_missing_imports = True
+
+[mypy-sphinx.*]
+ignore_missing_imports = True
+
+[mypy-sphinxcontrib.*]
+ignore_missing_imports = True
+
+[mypy-swh.docs.*]
+ignore_missing_imports = True
diff --git a/requirements-test.txt b/requirements-test.txt
index 489af9b0..576fe193 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,7 +1,8 @@
 hypothesis
 pytest
 pytest-django
 pytest-mock
+django-stubs
 requests-mock
 swh.core[http] >= 0.0.61
 swh.loader.git >= 0.0.47
diff --git a/swh/__init__.py b/swh/__init__.py
index 69e3be50..f14e1965 100644
--- a/swh/__init__.py
+++ b/swh/__init__.py
@@ -1 +1,4 @@
-__path__ = __import__('pkgutil').extend_path(__path__, __name__)
+from pkgutil import extend_path
+from typing import Iterable
+
+__path__ = extend_path(__path__, __name__)  # type: Iterable[str]
diff --git a/swh/web/py.typed b/swh/web/py.typed
new file mode 100644
index 00000000..1242d432
--- /dev/null
+++ b/swh/web/py.typed
@@ -0,0 +1 @@
+# Marker file for PEP 561.