diff --git a/jenkins.sh b/jenkins.sh
index b4105c3..646fdaf 100755
--- a/jenkins.sh
+++ b/jenkins.sh
@@ -30,7 +30,7 @@ $PIP_BIN install --upgrade 'pip!=20.3.2'
 $PIP_BIN install --upgrade setuptools
 $PIP_BIN install --upgrade 'pytest' 'attrs' 'more-itertools' WebTest mock pytest-cov
 $PIP_BIN install --upgrade 'pylint'
-$PIP_BIN install --upgrade 'Quixote>=3.0,<3.2' 'Django>=2.2,<2.3' 'gadjo' 'vobject' 'pyproj' 'requests' 'django-ratelimit<3' 'bleach' 'unidecode' 'pyquery'
+$PIP_BIN install --upgrade 'Quixote>=3.0,<3.2' 'Django>=2.2,<2.3' 'gadjo' 'vobject' 'pyproj' 'requests' 'django-ratelimit<3' 'bleach' 'unidecode' 'pyquery' 'lxml'
 $PIP_BIN install git+https://git.entrouvert.org/debian/django-ckeditor.git
 
 DJANGO_SETTINGS_MODULE=wcs.settings \