diff --git a/14.0.Dockerfile b/14.0.Dockerfile
index af7579d09b7b99c1a13c2e1232295958a2731787..6a31da4f4384207baed35b6434589f960f8625d7 100644
--- a/14.0.Dockerfile
+++ b/14.0.Dockerfile
@@ -24,7 +24,7 @@ RUN set -x; \
         apt-get install -y --no-install-recommends postgresql-client &&\
         apt-get install -y --no-install-recommends ${APT_DEPS} &&\
         pip3 install -r https://raw.githubusercontent.com/OCA/OCB/14.0/requirements.txt &&\
-        pip3 install phonenumbers simplejson gevent==20.12.1 pdfminer.six PyYAML zxcvbn &&\
+        pip3 install phonenumbers simplejson gevent==20.12.1 openupgradelib pdfminer.six PyYAML zxcvbn &&\
         apt-get -y purge ${APT_DEPS} &&\
         apt-get -y autoremove &&\
         rm -rf /var/lib/apt/lists/* wkhtmltox.deb