diff --git a/requirements.txt b/requirements.txt
index b22d175b..08c82a90 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,30 +1,36 @@
 # Add here external Python modules dependencies, one per line. Module names
 # should match https://pypi.python.org/pypi names. For the full spec or
 # dependency lines, see https://pip.readthedocs.org/en/1.1/requirements.html
 
 beautifulsoup4
 chardet
 cryptography
 django < 3
 django-cors-headers
 django-js-reverse
 djangorestframework
 django-webpack-loader
 docutils
 htmlmin
 iso8601
 lxml
-# Fix 'ImportError: cannot import name 'soft_unicode' from 'markupsafe''
-# when running pytest
-# TODO: remove that dependency once pybadges depends on Jinja2 >=3
-markupsafe < 2.1.0
 prometheus-client
 pybadges >= 2.2.1
 pygments
 python-magic >= 0.4.0
 python-memcached
 pyyaml
 requests
 sentry-sdk
 typing-extensions
 psycopg2 < 2.9
+
+# TODO: remove dependencies below once pybadges depends on Jinja2 >=3
+
+# Fix "ImportError: cannot import name 'soft_unicode' from 'markupsafe'"
+# when running pytest
+markupsafe < 2.1.0
+# Fix "ImportError: cannot import name 'json' from 'itsdangerous'"
+# when running pytest after calling "./bin/install" from swh-environement
+# in empty venv
+flask >= 1.1.4